fix: allow env vars and SSH tokens in IdentityFile validation (issue #33)

ValidateIdentityFile now accepts $VAR/${VAR} (expanded via os.Expand, undefined vars accepted as-is) and SSH tokens like %d, %h before falling back to os.Stat.
The raw value is preserved when writing to ssh_config.

.goreleaser.yaml

@@ -138,6 +138,12 @@ release:
 
     ---
 
+    📖 **Documentation:** See the updated [README](https://github.com/Gu1llaum-3/sshm/blob/main/README.md)
+
+    🐛 **Issues:** Found a bug? Open an [issue](https://github.com/Gu1llaum-3/sshm/issues)
+
+    ---
+
     Released with ❤️ by [GoReleaser](https://github.com/goreleaser/goreleaser)
 
 # Snapshot builds (for non-tag builds)

README.md

@@ -44,7 +44,7 @@ SSHM is a beautiful command-line tool that transforms how you manage and connect
 - **🔄 Automatic Conversion** - Seamlessly converts between command-line and config formats
 - **🔄 Automatic Backups** - Backup configurations automatically before changes
 - **✅ Validation** - Prevent configuration errors with built-in validation
-- **🔗 ProxyJump Support** - Secure connection tunneling through bastion hosts
+- **🔗 ProxyJump/ProxyCommand Support** - Secure connection tunneling through bastion hosts
 - **⌨️ Keyboard Shortcuts** - Power user navigation with vim-like shortcuts
 - **🌐 Cross-platform** - Supports Linux, macOS (Intel & Apple Silicon), and Windows
 - **⚡ Lightweight** - Single binary with no dependencies, zero configuration required
@@ -129,6 +129,7 @@ The interactive forms will guide you through configuration:
 - **Port** - SSH port (default: 22)
 - **Identity File** - Private key path
 - **ProxyJump** - Jump server for connection tunneling
+- **ProxyCommand** - Jump command for connection tunneling
 - **SSH Options** - Additional SSH options in `-o` format (e.g., `-o Compression=yes -o ServerAliveInterval=60`)
 - **Tags** - Comma-separated tags for organization
 
@@ -228,6 +229,15 @@ sshm
 # Connect directly to a specific host (with history tracking)
 sshm my-server
 
+# Execute a command on a remote host
+sshm my-server uptime
+
+# Execute command with arguments
+sshm my-server ls -la /var/log
+
+# Force TTY allocation for interactive commands
+sshm -t my-server sudo systemctl restart nginx
+
 # Launch TUI with custom SSH config file
 sshm -c /path/to/custom/ssh_config
 
@@ -258,13 +268,87 @@ sshm move my-server -c /path/to/custom/ssh_config
 # Search for hosts (interactive filter)
 sshm search
 
-# Show version information (includes update check)
+# Print machine-readable info (JSON) for scripting
+sshm info prod-server
+sshm info prod-server --pretty
+
+# With a custom SSH config file
+sshm -c /path/to/custom/ssh_config info prod-server
+
+# Pipe to jq
+sshm info prod-server | jq -r '.result.target.hostname'
+sshm info prod-server | jq -r '.result.target.user'
+
+# Show version information
 sshm --version
 
+# Disable automatic update check (useful on air-gapped machines)
+sshm --no-update-check
+
 # Show help and available commands
 sshm --help
 ```
 
+### Host Info (JSON)
+
+`sshm info <hostname>` prints a single JSON object to stdout so you can script against it with `jq`.
+
+```bash
+# Extract fields
+sshm info prod-server | jq -r '.result.target.hostname'
+sshm info prod-server | jq -r '.result.target.port'
+
+# Check not-found (exit code 2)
+sshm info does-not-exist | jq -r '.error.code'
+```
+
+### Shell Completion
+
+SSHM supports shell completion for host names, making it easy to connect to hosts without typing full names:
+
+```bash
+sshm <TAB>           # Lists all available hosts
+sshm pro<TAB>        # Completes to hosts starting with "pro" (e.g., prod-server)
+```
+
+**Setup Instructions:**
+
+**Bash:**
+```bash
+# Enable for current session
+source <(sshm completion bash)
+
+# Enable permanently (add to ~/.bashrc)
+echo 'source <(sshm completion bash)' >> ~/.bashrc
+```
+
+**Zsh:**
+```bash
+# Enable for current session
+source <(sshm completion zsh)
+
+# Enable permanently (add to ~/.zshrc)
+echo 'source <(sshm completion zsh)' >> ~/.zshrc
+```
+
+**Fish:**
+```bash
+# Enable for current session
+sshm completion fish | source
+
+# Enable permanently
+sshm completion fish > ~/.config/fish/completions/sshm.fish
+```
+
+**PowerShell:**
+```powershell
+# Enable for current session
+sshm completion powershell | Out-String | Invoke-Expression
+
+# Enable permanently (add to your PowerShell profile)
+Add-Content $PROFILE 'sshm completion powershell | Out-String | Invoke-Expression'
+```
+
 ### Direct Host Connection
 
 SSHM supports direct connection to hosts via the command line, making it easy to integrate into your existing workflow:
@@ -285,6 +369,33 @@ sshm web-01
 - **Error handling** - Clear messages if host doesn't exist or configuration issues
 - **Config file support** - Works with custom config files using `-c` flag
 
+### Remote Command Execution
+
+Execute commands on remote hosts without opening an interactive shell:
+
+```bash
+# Execute a single command
+sshm prod-server uptime
+
+# Execute command with arguments
+sshm prod-server ls -la /var/log
+
+# Check disk usage
+sshm prod-server df -h
+
+# View logs (pipe to local commands)
+sshm prod-server 'cat /var/log/nginx/access.log' | grep 404
+
+# Force TTY allocation for interactive commands (sudo, vim, etc.)
+sshm -t prod-server sudo systemctl restart nginx
+```
+
+**Features:**
+- **Exit code propagation** - Remote command exit codes are passed through
+- **TTY support** - Use `-t` flag for commands requiring terminal interaction
+- **Pipe-friendly** - Output can be piped to local commands for processing
+- **History tracking** - Command executions are recorded in connection history
+
 ### Backup Configuration
 
 SSHM automatically creates backups of your SSH configuration files before making any changes to ensure your configurations are safe.
@@ -391,17 +502,31 @@ SSHM features asynchronous SSH connectivity checking that provides visual indica
 SSHM includes built-in version checking that notifies you of available updates:
 
 **Features:**
-- **Background checking** - Version check happens asynchronously
+- **Background checking** - Version check happens asynchronously, never blocking startup
 - **Release notifications** - Clear indicators when updates are available
 - **Pre-release detection** - Identifies beta and development versions
 - **GitHub integration** - Direct links to release pages
 - **Non-intrusive** - Updates don't interrupt your workflow
+- **Configurable** - Can be disabled for air-gapped or offline environments
 
 **Update notifications appear:**
 - In the main TUI interface as a subtle notification
-- In the `sshm --version` command output
 - Only when a newer stable version is available
 
+**Disabling update checks:**
+
+Via the CLI flag (one-time):
+```bash
+sshm --no-update-check
+```
+
+Via `~/.config/sshm/config.json` (persistent):
+```json
+{
+  "check_for_updates": false
+}
+```
+
 #### Port Forwarding History
 
 SSHM remembers your port forwarding configurations for easy reuse:
@@ -504,6 +629,7 @@ Host backend-prod
     User app
     Port 22
     ProxyJump bastion.company.com
+    ProxyCommand ssh -W %h:%p Jumphost
     IdentityFile ~/.ssh/production_key
     Compression yes
     ServerAliveInterval 300
@@ -520,6 +646,7 @@ SSHM supports all standard SSH configuration options:
 - `Port` - SSH port number
 - `IdentityFile` - Path to private key file
 - `ProxyJump` - Jump server for connection tunneling (e.g., `user@jumphost:port`)
+- `ProxyCommand` - Jump command for connection tunneling (e.g, `ssh -W %h:%p Jumphost`)
 - `Tags` - Custom tags (SSHM extension)
 
 **Additional SSH Options:**
@@ -553,9 +680,9 @@ This will be automatically converted to:
     StrictHostKeyChecking no
 ```
 
-### Custom Key Bindings
+### Application Configuration
 
-SSHM supports customizable key bindings through a configuration file. This is particularly useful for users who want to modify the default quit behavior.
+SSHM supports a configuration file to customize its behavior, including key bindings and update checking.
 
 **Configuration File Location:**
 - **Linux/macOS**: `~/.config/sshm/config.json`
@@ -564,6 +691,7 @@ SSHM supports customizable key bindings through a configuration file. This is pa
 **Example Configuration:**
 ```json
 {
+  "check_for_updates": false,
   "key_bindings": {
     "quit_keys": ["q", "ctrl+c"],
     "disable_esc_quit": true
@@ -572,12 +700,16 @@ SSHM supports customizable key bindings through a configuration file. This is pa
 ```
 
 **Available Options:**
+- **check_for_updates**: Boolean to enable or disable the automatic update check at startup. Default: `true`. Set to `false` on air-gapped or offline machines to avoid connection delays.
 - **quit_keys**: Array of keys that will quit the application. Default: `["q", "ctrl+c"]`
 - **disable_esc_quit**: Boolean flag to disable ESC key from quitting the application. Default: `false`
 
 **For Vim Users:**
 If you frequently press ESC accidentally causing the application to quit, set `disable_esc_quit` to `true`. This will disable ESC as a quit key while preserving all other functionality.
 
+**For Air-gapped Machines:**
+If SSHM is slow to start due to DNS timeouts when reaching GitHub, set `check_for_updates` to `false`. You can also use the `--no-update-check` CLI flag for a one-time override without editing the config file.
+
 **Default Configuration:**
 If no configuration file exists, SSHM will automatically create one with default settings that maintain backward compatibility.
 

cmd/completion.go

@@ -0,0 +1,60 @@
+package cmd
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var completionCmd = &cobra.Command{
+	Use:   "completion [bash|zsh|fish|powershell]",
+	Short: "Generate shell completion script",
+	Long: `Generate shell completion script for sshm.
+
+To load completions:
+
+Bash:
+  $ source <(sshm completion bash)
+  
+  # To load completions for each session, add to your ~/.bashrc:
+  # echo 'source <(sshm completion bash)' >> ~/.bashrc
+
+Zsh:
+  $ source <(sshm completion zsh)
+  
+  # To load completions for each session, add to your ~/.zshrc:
+  # echo 'source <(sshm completion zsh)' >> ~/.zshrc
+
+Fish:
+  $ sshm completion fish | source
+  
+  # To load completions for each session:
+  $ sshm completion fish > ~/.config/fish/completions/sshm.fish
+
+PowerShell:
+  PS> sshm completion powershell | Out-String | Invoke-Expression
+  
+  # To load completions for each session, add to your PowerShell profile:
+  # Add-Content $PROFILE 'sshm completion powershell | Out-String | Invoke-Expression'
+`,
+	DisableFlagsInUseLine: true,
+	ValidArgs:             []string{"bash", "zsh", "fish", "powershell"},
+	Args:                  cobra.MatchAll(cobra.ExactArgs(1), cobra.OnlyValidArgs),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		switch args[0] {
+		case "bash":
+			return cmd.Root().GenBashCompletionV2(os.Stdout, true)
+		case "zsh":
+			return cmd.Root().GenZshCompletion(os.Stdout)
+		case "fish":
+			return cmd.Root().GenFishCompletion(os.Stdout, true)
+		case "powershell":
+			return cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout)
+		}
+		return nil
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(completionCmd)
+}

cmd/completion_test.go

@@ -0,0 +1,285 @@
+package cmd
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/spf13/cobra"
+)
+
+func TestCompletionCommand(t *testing.T) {
+	if completionCmd.Use != "completion [bash|zsh|fish|powershell]" {
+		t.Errorf("Expected Use 'completion [bash|zsh|fish|powershell]', got '%s'", completionCmd.Use)
+	}
+
+	if completionCmd.Short != "Generate shell completion script" {
+		t.Errorf("Expected Short description, got '%s'", completionCmd.Short)
+	}
+}
+
+func TestCompletionCommandValidArgs(t *testing.T) {
+	expected := []string{"bash", "zsh", "fish", "powershell"}
+
+	if len(completionCmd.ValidArgs) != len(expected) {
+		t.Errorf("Expected %d valid args, got %d", len(expected), len(completionCmd.ValidArgs))
+	}
+
+	for i, arg := range expected {
+		if completionCmd.ValidArgs[i] != arg {
+			t.Errorf("Expected ValidArgs[%d] to be '%s', got '%s'", i, arg, completionCmd.ValidArgs[i])
+		}
+	}
+}
+
+func TestCompletionCommandRegistered(t *testing.T) {
+	found := false
+	for _, cmd := range RootCmd.Commands() {
+		if cmd.Name() == "completion" {
+			found = true
+			break
+		}
+	}
+
+	if !found {
+		t.Error("Expected 'completion' command to be registered")
+	}
+}
+
+func TestCompletionBashOutput(t *testing.T) {
+	oldStdout := os.Stdout
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+
+	RootCmd.SetArgs([]string{"completion", "bash"})
+	err := RootCmd.Execute()
+
+	w.Close()
+	os.Stdout = oldStdout
+
+	if err != nil {
+		t.Errorf("Expected no error for bash completion, got %v", err)
+	}
+
+	var buf bytes.Buffer
+	buf.ReadFrom(r)
+	output := buf.String()
+
+	if !strings.Contains(output, "bash completion") || !strings.Contains(output, "sshm") {
+		t.Error("Bash completion output should contain bash completion markers and sshm")
+	}
+}
+
+func TestCompletionZshOutput(t *testing.T) {
+	oldStdout := os.Stdout
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+
+	RootCmd.SetArgs([]string{"completion", "zsh"})
+	err := RootCmd.Execute()
+
+	w.Close()
+	os.Stdout = oldStdout
+
+	if err != nil {
+		t.Errorf("Expected no error for zsh completion, got %v", err)
+	}
+
+	var buf bytes.Buffer
+	buf.ReadFrom(r)
+	output := buf.String()
+
+	if !strings.Contains(output, "compdef") || !strings.Contains(output, "sshm") {
+		t.Error("Zsh completion output should contain compdef and sshm")
+	}
+}
+
+func TestCompletionFishOutput(t *testing.T) {
+	oldStdout := os.Stdout
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+
+	RootCmd.SetArgs([]string{"completion", "fish"})
+	err := RootCmd.Execute()
+
+	w.Close()
+	os.Stdout = oldStdout
+
+	if err != nil {
+		t.Errorf("Expected no error for fish completion, got %v", err)
+	}
+
+	var buf bytes.Buffer
+	buf.ReadFrom(r)
+	output := buf.String()
+
+	if !strings.Contains(output, "complete") || !strings.Contains(output, "sshm") {
+		t.Error("Fish completion output should contain complete command and sshm")
+	}
+}
+
+func TestCompletionPowershellOutput(t *testing.T) {
+	oldStdout := os.Stdout
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+
+	RootCmd.SetArgs([]string{"completion", "powershell"})
+	err := RootCmd.Execute()
+
+	w.Close()
+	os.Stdout = oldStdout
+
+	if err != nil {
+		t.Errorf("Expected no error for powershell completion, got %v", err)
+	}
+
+	var buf bytes.Buffer
+	buf.ReadFrom(r)
+	output := buf.String()
+
+	if !strings.Contains(output, "Register-ArgumentCompleter") || !strings.Contains(output, "sshm") {
+		t.Error("PowerShell completion output should contain Register-ArgumentCompleter and sshm")
+	}
+}
+
+func TestCompletionInvalidShell(t *testing.T) {
+	RootCmd.SetArgs([]string{"completion", "invalid"})
+	err := RootCmd.Execute()
+
+	if err == nil {
+		t.Error("Expected error for invalid shell type")
+	}
+}
+
+func TestCompletionNoArgs(t *testing.T) {
+	RootCmd.SetArgs([]string{"completion"})
+	err := RootCmd.Execute()
+
+	if err == nil {
+		t.Error("Expected error when no shell type provided")
+	}
+}
+
+func TestValidArgsFunction(t *testing.T) {
+	if RootCmd.ValidArgsFunction == nil {
+		t.Fatal("Expected ValidArgsFunction to be set on RootCmd")
+	}
+}
+
+func TestValidArgsFunctionWithSSHConfig(t *testing.T) {
+	tmpDir := t.TempDir()
+	testConfigFile := filepath.Join(tmpDir, "config")
+
+	sshConfig := `Host prod-server
+    HostName 192.168.1.1
+    User admin
+
+Host dev-server
+    HostName 192.168.1.2
+    User developer
+
+Host staging-db
+    HostName 192.168.1.3
+    User dbadmin
+`
+	err := os.WriteFile(testConfigFile, []byte(sshConfig), 0600)
+	if err != nil {
+		t.Fatalf("Failed to write test config: %v", err)
+	}
+
+	originalConfigFile := configFile
+	defer func() { configFile = originalConfigFile }()
+	configFile = testConfigFile
+
+	tests := []struct {
+		name       string
+		toComplete string
+		args       []string
+		wantCount  int
+		wantHosts  []string
+	}{
+		{
+			name:       "empty prefix returns all hosts",
+			toComplete: "",
+			args:       []string{},
+			wantCount:  3,
+			wantHosts:  []string{"prod-server", "dev-server", "staging-db"},
+		},
+		{
+			name:       "prefix filters hosts",
+			toComplete: "prod",
+			args:       []string{},
+			wantCount:  1,
+			wantHosts:  []string{"prod-server"},
+		},
+		{
+			name:       "prefix case insensitive",
+			toComplete: "DEV",
+			args:       []string{},
+			wantCount:  1,
+			wantHosts:  []string{"dev-server"},
+		},
+		{
+			name:       "no match returns empty",
+			toComplete: "nonexistent",
+			args:       []string{},
+			wantCount:  0,
+			wantHosts:  []string{},
+		},
+		{
+			name:       "already has host arg returns nothing",
+			toComplete: "",
+			args:       []string{"existing-host"},
+			wantCount:  0,
+			wantHosts:  []string{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			completions, directive := RootCmd.ValidArgsFunction(RootCmd, tt.args, tt.toComplete)
+
+			if len(completions) != tt.wantCount {
+				t.Errorf("Expected %d completions, got %d: %v", tt.wantCount, len(completions), completions)
+			}
+
+			if directive != cobra.ShellCompDirectiveNoFileComp {
+				t.Errorf("Expected ShellCompDirectiveNoFileComp, got %v", directive)
+			}
+
+			for _, wantHost := range tt.wantHosts {
+				found := false
+				for _, comp := range completions {
+					if comp == wantHost {
+						found = true
+						break
+					}
+				}
+				if !found {
+					t.Errorf("Expected completion '%s' not found in %v", wantHost, completions)
+				}
+			}
+		})
+	}
+}
+
+func TestValidArgsFunctionWithNonExistentConfig(t *testing.T) {
+	tmpDir := t.TempDir()
+	nonExistentConfig := filepath.Join(tmpDir, "nonexistent")
+
+	originalConfigFile := configFile
+	defer func() { configFile = originalConfigFile }()
+	configFile = nonExistentConfig
+
+	completions, directive := RootCmd.ValidArgsFunction(RootCmd, []string{}, "")
+
+	if directive != cobra.ShellCompDirectiveNoFileComp {
+		t.Errorf("Expected ShellCompDirectiveNoFileComp for non-existent config, got %v", directive)
+	}
+
+	if len(completions) != 0 {
+		t.Errorf("Expected empty completions for non-existent config, got %v", completions)
+	}
+}

cmd/info.go

@@ -0,0 +1,199 @@
+package cmd
+
+import (
+	"encoding/json"
+	"io"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/Gu1llaum-3/sshm/internal/config"
+
+	"github.com/spf13/cobra"
+)
+
+type infoResponse struct {
+	Schema   string      `json:"schema"`
+	OK       bool        `json:"ok"`
+	Hostname string      `json:"hostname"`
+	Result   *infoResult `json:"result"`
+	Error    *infoError  `json:"error"`
+}
+
+type infoResult struct {
+	CanonicalName string      `json:"canonical_name"`
+	Target        infoTarget  `json:"target"`
+	IdentityFile  *string     `json:"identity_file"`
+	ProxyJump     *string     `json:"proxy_jump"`
+	ProxyCommand  *string     `json:"proxy_command"`
+	Options       *string     `json:"options"`
+	Tags          []string    `json:"tags"`
+	RemoteCommand *string     `json:"remote_command"`
+	RequestTTY    *string     `json:"request_tty"`
+	Source        *infoSource `json:"source"`
+}
+
+type infoTarget struct {
+	Host     string  `json:"host"`
+	Hostname *string `json:"hostname"`
+	User     *string `json:"user"`
+	Port     *int    `json:"port"`
+}
+
+type infoSource struct {
+	File string `json:"file"`
+	Line int    `json:"line"`
+}
+
+type infoError struct {
+	Code    string          `json:"code"`
+	Message string          `json:"message"`
+	Details json.RawMessage `json:"details"`
+}
+
+func maybeString(v string) *string {
+	trimmed := strings.TrimSpace(v)
+	if trimmed == "" {
+		return nil
+	}
+	return &trimmed
+}
+
+func maybePort(v string) (*int, error) {
+	trimmed := strings.TrimSpace(v)
+	if trimmed == "" {
+		return nil, nil
+	}
+	port, err := strconv.Atoi(trimmed)
+	if err != nil {
+		return nil, err
+	}
+	return &port, nil
+}
+
+func writeInfoJSON(out io.Writer, pretty bool, resp infoResponse) {
+	var b []byte
+	var err error
+	if pretty {
+		b, err = json.MarshalIndent(resp, "", "  ")
+	} else {
+		b, err = json.Marshal(resp)
+	}
+	if err != nil {
+		_, _ = io.WriteString(out, `{"schema":"sshm.info.v1","ok":false,"hostname":"","result":null,"error":{"code":"INTERNAL","message":"failed to marshal JSON","details":null}}\n`)
+		return
+	}
+	_, _ = out.Write(append(b, '\n'))
+}
+
+func runInfo(out io.Writer, hostnameArg string, cfgFile string, pretty bool) int {
+	resp := infoResponse{
+		Schema:   "sshm.info.v1",
+		OK:       false,
+		Hostname: hostnameArg,
+		Result:   nil,
+		Error:    nil,
+	}
+
+	var host *config.SSHHost
+	var err error
+	if cfgFile != "" {
+		host, err = config.GetSSHHostFromFile(hostnameArg, cfgFile)
+	} else {
+		host, err = config.GetSSHHost(hostnameArg)
+	}
+	if err != nil {
+		code := 1
+		errCode := "CONFIG_ERROR"
+		msg := err.Error()
+		if strings.Contains(msg, "not found") {
+			code = 2
+			errCode = "NOT_FOUND"
+		}
+
+		resp.Error = &infoError{Code: errCode, Message: msg, Details: nil}
+		writeInfoJSON(out, pretty, resp)
+		return code
+	}
+
+	port, portErr := maybePort(host.Port)
+	if portErr != nil {
+		resp.Error = &infoError{Code: "CONFIG_ERROR", Message: "invalid port in host configuration", Details: nil}
+		writeInfoJSON(out, pretty, resp)
+		return 1
+	}
+
+	res := infoResult{
+		CanonicalName: host.Name,
+		Target: infoTarget{
+			Host:     hostnameArg,
+			Hostname: maybeString(host.Hostname),
+			User:     maybeString(host.User),
+			Port:     port,
+		},
+		IdentityFile:  maybeString(host.Identity),
+		ProxyJump:     maybeString(host.ProxyJump),
+		ProxyCommand:  maybeString(host.ProxyCommand),
+		Options:       maybeString(host.Options),
+		Tags:          host.Tags,
+		RemoteCommand: maybeString(host.RemoteCommand),
+		RequestTTY:    maybeString(host.RequestTTY),
+		Source: &infoSource{
+			File: host.SourceFile,
+			Line: host.LineNumber,
+		},
+	}
+
+	resp.OK = true
+	resp.Result = &res
+	writeInfoJSON(out, pretty, resp)
+	return 0
+}
+
+var infoPretty bool
+
+var infoCmd = &cobra.Command{
+	Use:           "info <hostname>",
+	Short:         "Print machine-readable information about a host",
+	Long:          "Print machine-readable information (JSON) about a configured SSH host.",
+	Args:          cobra.ExactArgs(1),
+	SilenceUsage:  true,
+	SilenceErrors: true,
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+
+		var hosts []config.SSHHost
+		var err error
+		if configFile != "" {
+			hosts, err = config.ParseSSHConfigFile(configFile)
+		} else {
+			hosts, err = config.ParseSSHConfig()
+		}
+		if err != nil {
+			return nil, cobra.ShellCompDirectiveError
+		}
+
+		var completions []string
+		toCompleteLower := strings.ToLower(toComplete)
+		for _, host := range hosts {
+			if strings.HasPrefix(strings.ToLower(host.Name), toCompleteLower) {
+				completions = append(completions, host.Name)
+			}
+		}
+		return completions, cobra.ShellCompDirectiveNoFileComp
+	},
+	RunE: func(cmd *cobra.Command, args []string) error {
+		exitCode := runInfo(cmd.OutOrStdout(), args[0], configFile, infoPretty)
+		if exitCode != 0 {
+			os.Exit(exitCode)
+		}
+		return nil
+	},
+}
+
+func init() {
+	infoCmd.Flags().BoolVar(&infoPretty, "pretty", false, "Pretty-print JSON output")
+	RootCmd.AddCommand(infoCmd)
+}

cmd/info_test.go

@@ -0,0 +1,321 @@
+package cmd
+
+import (
+	"bytes"
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/spf13/cobra"
+)
+
+type infoResponseForTest struct {
+	Schema   string             `json:"schema"`
+	OK       bool               `json:"ok"`
+	Hostname string             `json:"hostname"`
+	Result   *infoResultForTest `json:"result"`
+	Error    *infoErrorForTest  `json:"error"`
+}
+
+type infoResultForTest struct {
+	CanonicalName string             `json:"canonical_name"`
+	Target        infoTargetForTest  `json:"target"`
+	IdentityFile  *string            `json:"identity_file"`
+	ProxyJump     *string            `json:"proxy_jump"`
+	ProxyCommand  *string            `json:"proxy_command"`
+	Options       *string            `json:"options"`
+	Tags          []string           `json:"tags"`
+	RemoteCommand *string            `json:"remote_command"`
+	RequestTTY    *string            `json:"request_tty"`
+	Source        *infoSourceForTest `json:"source"`
+}
+
+type infoTargetForTest struct {
+	Host     string  `json:"host"`
+	Hostname *string `json:"hostname"`
+	User     *string `json:"user"`
+	Port     *int    `json:"port"`
+}
+
+type infoSourceForTest struct {
+	File string `json:"file"`
+	Line int    `json:"line"`
+}
+
+type infoErrorForTest struct {
+	Code    string          `json:"code"`
+	Message string          `json:"message"`
+	Details json.RawMessage `json:"details"`
+}
+
+func TestInfoCommandConfig(t *testing.T) {
+	if infoCmd.Use != "info <hostname>" {
+		t.Fatalf("infoCmd.Use=%q", infoCmd.Use)
+	}
+
+	err := infoCmd.Args(infoCmd, []string{})
+	if err == nil {
+		t.Fatalf("expected args error for no args")
+	}
+
+	err = infoCmd.Args(infoCmd, []string{"one", "two"})
+	if err == nil {
+		t.Fatalf("expected args error for too many args")
+	}
+
+	err = infoCmd.Args(infoCmd, []string{"host"})
+	if err != nil {
+		t.Fatalf("expected no args error, got %v", err)
+	}
+}
+
+func TestInfoCommandRegistration(t *testing.T) {
+	found := false
+	for _, c := range RootCmd.Commands() {
+		if c.Name() == "info" {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatalf("info command not registered")
+	}
+}
+
+func TestRunInfoSuccessJSON(t *testing.T) {
+	tempDir := t.TempDir()
+	cfg := filepath.Join(tempDir, "config")
+
+	cfgContent := `# Tags: prod, web
+Host prod-web
+    HostName 10.0.0.10
+    User deploy
+    Port 2222
+    IdentityFile ~/.ssh/id_prod
+    ProxyJump bastion
+    ServerAliveInterval 60
+`
+
+	if err := os.WriteFile(cfg, []byte(cfgContent), 0600); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	buf := new(bytes.Buffer)
+	exitCode := runInfo(buf, "prod-web", cfg, false)
+	if exitCode != 0 {
+		t.Fatalf("exitCode=%d", exitCode)
+	}
+
+	out := buf.String()
+	if strings.TrimSpace(out) == "" {
+		t.Fatalf("expected output")
+	}
+
+	var resp infoResponseForTest
+	if err := json.Unmarshal([]byte(out), &resp); err != nil {
+		t.Fatalf("output not JSON: %v\noutput=%q", err, out)
+	}
+
+	if resp.Schema != "sshm.info.v1" {
+		t.Fatalf("schema=%q", resp.Schema)
+	}
+	if !resp.OK {
+		t.Fatalf("ok=false")
+	}
+	if resp.Result == nil {
+		t.Fatalf("result is nil")
+	}
+	if resp.Error != nil {
+		t.Fatalf("error is non-nil")
+	}
+
+	if resp.Result.CanonicalName != "prod-web" {
+		t.Fatalf("canonical_name=%q", resp.Result.CanonicalName)
+	}
+	if resp.Result.Target.Host != "prod-web" {
+		t.Fatalf("target.host=%q", resp.Result.Target.Host)
+	}
+	if resp.Result.Target.Hostname == nil || *resp.Result.Target.Hostname != "10.0.0.10" {
+		t.Fatalf("target.hostname=%v", resp.Result.Target.Hostname)
+	}
+	if resp.Result.Target.User == nil || *resp.Result.Target.User != "deploy" {
+		t.Fatalf("target.user=%v", resp.Result.Target.User)
+	}
+	if resp.Result.Target.Port == nil || *resp.Result.Target.Port != 2222 {
+		t.Fatalf("target.port=%v", resp.Result.Target.Port)
+	}
+	if resp.Result.Source == nil || resp.Result.Source.File == "" || resp.Result.Source.Line == 0 {
+		t.Fatalf("source missing: %#v", resp.Result.Source)
+	}
+	if resp.Result.IdentityFile == nil || *resp.Result.IdentityFile != "~/.ssh/id_prod" {
+		t.Fatalf("identity_file=%v", resp.Result.IdentityFile)
+	}
+	if resp.Result.ProxyJump == nil || *resp.Result.ProxyJump != "bastion" {
+		t.Fatalf("proxy_jump=%v", resp.Result.ProxyJump)
+	}
+}
+
+func TestRunInfoNotFoundJSON(t *testing.T) {
+	tempDir := t.TempDir()
+	cfg := filepath.Join(tempDir, "config")
+	cfgContent := `Host known
+    HostName example.com
+`
+	if err := os.WriteFile(cfg, []byte(cfgContent), 0600); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	buf := new(bytes.Buffer)
+	exitCode := runInfo(buf, "missing", cfg, false)
+	if exitCode != 2 {
+		t.Fatalf("exitCode=%d", exitCode)
+	}
+
+	var resp infoResponseForTest
+	if err := json.Unmarshal(buf.Bytes(), &resp); err != nil {
+		t.Fatalf("output not JSON: %v", err)
+	}
+	if resp.OK {
+		t.Fatalf("ok=true")
+	}
+	if resp.Error == nil {
+		t.Fatalf("error is nil")
+	}
+	if resp.Error.Code != "NOT_FOUND" {
+		t.Fatalf("error.code=%q", resp.Error.Code)
+	}
+}
+
+func TestRunInfoPrettyJSON(t *testing.T) {
+	tempDir := t.TempDir()
+	cfg := filepath.Join(tempDir, "config")
+	cfgContent := `Host known
+    HostName 127.0.0.1
+`
+	if err := os.WriteFile(cfg, []byte(cfgContent), 0600); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	buf := new(bytes.Buffer)
+	exitCode := runInfo(buf, "known", cfg, true)
+	if exitCode != 0 {
+		t.Fatalf("exitCode=%d", exitCode)
+	}
+
+	out := buf.String()
+	if !strings.Contains(out, "\n") {
+		t.Fatalf("expected pretty output")
+	}
+
+	var resp infoResponseForTest
+	if err := json.Unmarshal(buf.Bytes(), &resp); err != nil {
+		t.Fatalf("output not JSON: %v", err)
+	}
+	if !resp.OK {
+		t.Fatalf("ok=false")
+	}
+}
+
+func TestInfoValidArgsFunction(t *testing.T) {
+	if infoCmd.ValidArgsFunction == nil {
+		t.Fatalf("expected ValidArgsFunction to be set on infoCmd")
+	}
+}
+
+func TestInfoValidArgsFunctionWithSSHConfig(t *testing.T) {
+	tmpDir := t.TempDir()
+	testConfigFile := filepath.Join(tmpDir, "config")
+
+	sshConfig := `Host prod-server
+    HostName 192.168.1.1
+    User admin
+
+Host dev-server
+    HostName 192.168.1.2
+    User developer
+
+Host staging-db
+    HostName 192.168.1.3
+    User dbadmin
+`
+	if err := os.WriteFile(testConfigFile, []byte(sshConfig), 0600); err != nil {
+		t.Fatalf("Failed to write test config: %v", err)
+	}
+
+	originalConfigFile := configFile
+	defer func() { configFile = originalConfigFile }()
+	configFile = testConfigFile
+
+	tests := []struct {
+		name       string
+		toComplete string
+		args       []string
+		wantCount  int
+		wantHosts  []string
+	}{
+		{
+			name:       "empty prefix returns all hosts",
+			toComplete: "",
+			args:       []string{},
+			wantCount:  3,
+			wantHosts:  []string{"prod-server", "dev-server", "staging-db"},
+		},
+		{
+			name:       "prefix filters hosts",
+			toComplete: "prod",
+			args:       []string{},
+			wantCount:  1,
+			wantHosts:  []string{"prod-server"},
+		},
+		{
+			name:       "prefix case insensitive",
+			toComplete: "DEV",
+			args:       []string{},
+			wantCount:  1,
+			wantHosts:  []string{"dev-server"},
+		},
+		{
+			name:       "no match returns empty",
+			toComplete: "nonexistent",
+			args:       []string{},
+			wantCount:  0,
+			wantHosts:  []string{},
+		},
+		{
+			name:       "already has host arg returns nothing",
+			toComplete: "",
+			args:       []string{"existing-host"},
+			wantCount:  0,
+			wantHosts:  []string{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			completions, directive := infoCmd.ValidArgsFunction(infoCmd, tt.args, tt.toComplete)
+
+			if len(completions) != tt.wantCount {
+				t.Fatalf("Expected %d completions, got %d: %v", tt.wantCount, len(completions), completions)
+			}
+
+			if directive != cobra.ShellCompDirectiveNoFileComp {
+				t.Fatalf("Expected ShellCompDirectiveNoFileComp, got %v", directive)
+			}
+
+			for _, wantHost := range tt.wantHosts {
+				found := false
+				for _, comp := range completions {
+					if comp == wantHost {
+						found = true
+						break
+					}
+				}
+				if !found {
+					t.Fatalf("Expected completion %q not found in %v", wantHost, completions)
+				}
+			}
+		})
+	}
+}

cmd/root.go

@@ -1,19 +1,16 @@
 package cmd
 
 import (
-	"context"
 	"fmt"
 	"log"
 	"os"
 	"os/exec"
 	"strings"
 	"syscall"
-	"time"
 
 	"github.com/Gu1llaum-3/sshm/internal/config"
 	"github.com/Gu1llaum-3/sshm/internal/history"
 	"github.com/Gu1llaum-3/sshm/internal/ui"
-	"github.com/Gu1llaum-3/sshm/internal/version"
 
 	"github.com/spf13/cobra"
 )
@@ -24,33 +21,82 @@ var AppVersion = "dev"
 // configFile holds the path to the SSH config file
 var configFile string
 
+// forceTTY forces pseudo-TTY allocation for remote commands
+var forceTTY bool
+
+// searchMode enables the focus on search mode at startup
+var searchMode bool
+
+// noUpdateCheck disables the async update check in the TUI
+var noUpdateCheck bool
+
 // RootCmd is the base command when called without any subcommands
 var RootCmd = &cobra.Command{
-	Use:   "sshm [host]",
+	Use:   "sshm [host] [command...]",
 	Short: "SSH Manager - A modern SSH connection manager",
 	Long: `SSHM is a modern SSH manager for your terminal.
 
 Main usage:
   Running 'sshm' (without arguments) opens the interactive TUI window to browse, search, and connect to your SSH hosts graphically.
   Running 'sshm <host>' connects directly to the specified host and records the connection in your history.
+  Running 'sshm <host> <command>' executes the command on the remote host and returns the output.
 
 You can also use sshm in CLI mode for other operations like adding, editing, or searching hosts.
 
-Hosts are read from your ~/.ssh/config file by default.`,
+Hosts are read from your ~/.ssh/config file by default.
+
+Examples:
+  sshm                           # Open interactive TUI
+  sshm prod-server               # Connect to host interactively
+  sshm prod-server uptime        # Execute 'uptime' on remote host
+  sshm prod-server ls -la /var   # Execute command with arguments
+  sshm -t prod-server sudo reboot # Force TTY for interactive commands`,
 	Version:       AppVersion,
 	Args:          cobra.ArbitraryArgs,
 	SilenceUsage:  true,
 	SilenceErrors: true, // We'll handle errors ourselves
+	// ValidArgsFunction provides shell completion for host names
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		// Only complete the first positional argument (host name)
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+
+		var hosts []config.SSHHost
+		var err error
+
+		if configFile != "" {
+			hosts, err = config.ParseSSHConfigFile(configFile)
+		} else {
+			hosts, err = config.ParseSSHConfig()
+		}
+
+		if err != nil {
+			return nil, cobra.ShellCompDirectiveError
+		}
+
+		var completions []string
+		toCompleteLower := strings.ToLower(toComplete)
+		for _, host := range hosts {
+			if strings.HasPrefix(strings.ToLower(host.Name), toCompleteLower) {
+				completions = append(completions, host.Name)
+			}
+		}
+
+		return completions, cobra.ShellCompDirectiveNoFileComp
+	},
 	RunE: func(cmd *cobra.Command, args []string) error {
-		// If no arguments provided, run interactive mode
 		if len(args) == 0 {
 			runInteractiveMode()
 			return nil
 		}
 
-		// If a host name is provided, connect directly
 		hostName := args[0]
-		connectToHost(hostName)
+		var remoteCommand []string
+		if len(args) > 1 {
+			remoteCommand = args[1:]
+		}
+		connectToHost(hostName, remoteCommand)
 		return nil
 	},
 }
@@ -97,13 +143,12 @@ func runInteractiveMode() {
 	}
 
 	// Run the interactive TUI
-	if err := ui.RunInteractiveMode(hosts, configFile, AppVersion); err != nil {
+	if err := ui.RunInteractiveMode(hosts, configFile, searchMode, AppVersion, noUpdateCheck); err != nil {
 		log.Fatalf("Error running interactive mode: %v", err)
 	}
 }
 
-func connectToHost(hostName string) {
-	// Quick check if host exists without full parsing (optimized for connection)
+func connectToHost(hostName string, remoteCommand []string) {
 	var hostFound bool
 	var err error
 
@@ -123,39 +168,51 @@ func connectToHost(hostName string) {
 		os.Exit(1)
 	}
 
-	// Record the connection in history
 	historyManager, err := history.NewHistoryManager()
 	if err != nil {
-		// Log the error but don't prevent the connection
 		fmt.Printf("Warning: Could not initialize connection history: %v\n", err)
 	} else {
 		err = historyManager.RecordConnection(hostName)
 		if err != nil {
-			// Log the error but don't prevent the connection
 			fmt.Printf("Warning: Could not record connection history: %v\n", err)
 		}
 	}
 
-	// Build and execute the SSH command
-	fmt.Printf("Connecting to %s...\n", hostName)
+	var args []string
 
-	var sshCmd *exec.Cmd
 	if configFile != "" {
-		sshCmd = exec.Command("ssh", "-F", configFile, hostName)
-	} else {
-		sshCmd = exec.Command("ssh", hostName)
+		args = append(args, "-F", configFile)
 	}
 
-	// Set up the command to use the same stdin, stdout, and stderr as the parent process
+	if forceTTY {
+		args = append(args, "-t")
+	}
+
+	args = append(args, hostName)
+
+	if len(remoteCommand) > 0 {
+		args = append(args, remoteCommand...)
+	} else {
+		fmt.Printf("Connecting to %s...\n", hostName)
+	}
+
+	sshPath, lookErr := exec.LookPath("ssh")
+	if lookErr == nil {
+		argv := append([]string{"ssh"}, args...)
+		// On Unix, Exec replaces the process and never returns on success.
+		// On Windows, Exec is not supported and returns an error; fall through to the exec.Command fallback.
+		_ = syscall.Exec(sshPath, argv, os.Environ())
+	}
+
+	// Fallback for Windows or if LookPath failed
+	sshCmd := exec.Command("ssh", args...)
 	sshCmd.Stdin = os.Stdin
 	sshCmd.Stdout = os.Stdout
 	sshCmd.Stderr = os.Stderr
 
-	// Execute the SSH command
 	err = sshCmd.Run()
 	if err != nil {
 		if exitError, ok := err.(*exec.ExitError); ok {
-			// SSH command failed, exit with the same code
 			if status, ok := exitError.Sys().(syscall.WaitStatus); ok {
 				os.Exit(status.ExitStatus())
 			}
@@ -165,43 +222,15 @@ func connectToHost(hostName string) {
 	}
 }
 
-// getVersionWithUpdateCheck returns a custom version string with update check
-func getVersionWithUpdateCheck() string {
-	versionText := fmt.Sprintf("sshm version %s", AppVersion)
-
-	// Check for updates
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-	defer cancel()
-
-	updateInfo, err := version.CheckForUpdates(ctx, AppVersion)
-	if err != nil {
-		// Return just version if check fails
-		return versionText + "\n"
-	}
-
-	if updateInfo != nil && updateInfo.Available {
-		versionText += fmt.Sprintf("\n🚀 Update available: %s → %s (%s)",
-			updateInfo.CurrentVer,
-			updateInfo.LatestVer,
-			updateInfo.ReleaseURL)
-	}
-
-	return versionText + "\n"
-}
-
 // Execute adds all child commands to the root command and sets flags appropriately.
 func Execute() {
-	// Custom error handling for unknown commands that might be host names
 	if err := RootCmd.Execute(); err != nil {
-		// Check if this is an "unknown command" error and the argument might be a host name
 		errStr := err.Error()
 		if strings.Contains(errStr, "unknown command") {
-			// Extract the command name from the error
 			parts := strings.Split(errStr, "\"")
 			if len(parts) >= 2 {
 				potentialHost := parts[1]
-				// Try to connect to this as a host
-				connectToHost(potentialHost)
+				connectToHost(potentialHost, nil)
 				return
 			}
 		}
@@ -211,9 +240,10 @@ func Execute() {
 }
 
 func init() {
-	// Add the config file flag
 	RootCmd.PersistentFlags().StringVarP(&configFile, "config", "c", "", "SSH config file to use (default: ~/.ssh/config)")
+	RootCmd.Flags().BoolVarP(&forceTTY, "tty", "t", false, "Force pseudo-TTY allocation (useful for interactive remote commands)")
+	RootCmd.PersistentFlags().BoolVarP(&searchMode, "search", "s", false, "Focus on search input at startup")
+	RootCmd.PersistentFlags().BoolVar(&noUpdateCheck, "no-update-check", false, "Disable automatic update check")
 
-	// Set custom version template with update check
-	RootCmd.SetVersionTemplate(getVersionWithUpdateCheck())
+	RootCmd.SetVersionTemplate("{{.Name}} version {{.Version}}\n")
 }

cmd/root_test.go

@@ -7,9 +7,8 @@ import (
 )
 
 func TestRootCommand(t *testing.T) {
-	// Test that the root command is properly configured
-	if RootCmd.Use != "sshm [host]" {
-		t.Errorf("Expected Use 'sshm [host]', got '%s'", RootCmd.Use)
+	if RootCmd.Use != "sshm [host] [command...]" {
+		t.Errorf("Expected Use 'sshm [host] [command...]', got '%s'", RootCmd.Use)
 	}
 
 	if RootCmd.Short != "SSH Manager - A modern SSH connection manager" {
@@ -22,10 +21,8 @@ func TestRootCommand(t *testing.T) {
 }
 
 func TestRootCommandFlags(t *testing.T) {
-	// Test that persistent flags are properly configured
 	flags := RootCmd.PersistentFlags()
 
-	// Check config flag
 	configFlag := flags.Lookup("config")
 	if configFlag == nil {
 		t.Error("Expected --config flag to be defined")
@@ -34,12 +31,21 @@ func TestRootCommandFlags(t *testing.T) {
 	if configFlag.Shorthand != "c" {
 		t.Errorf("Expected config flag shorthand 'c', got '%s'", configFlag.Shorthand)
 	}
+
+	ttyFlag := RootCmd.Flags().Lookup("tty")
+	if ttyFlag == nil {
+		t.Error("Expected --tty flag to be defined")
+		return
+	}
+	if ttyFlag.Shorthand != "t" {
+		t.Errorf("Expected tty flag shorthand 't', got '%s'", ttyFlag.Shorthand)
+	}
 }
 
 func TestRootCommandSubcommands(t *testing.T) {
 	// Test that all expected subcommands are registered
 	// Note: completion and help are automatically added by Cobra and may not always appear in Commands()
-	expectedCommands := []string{"add", "edit", "search"}
+	expectedCommands := []string{"add", "edit", "search", "info"}
 
 	commands := RootCmd.Commands()
 	commandNames := make(map[string]bool)
@@ -103,13 +109,17 @@ func TestExecuteFunction(t *testing.T) {
 }
 
 func TestConnectToHostFunction(t *testing.T) {
-	// Test that connectToHost function exists and can be called
-	// Note: We can't easily test the actual connection without a valid SSH config
-	// and without actually connecting to a host, but we can verify the function exists
 	t.Log("connectToHost function exists and is accessible")
+}
 
-	// The function will handle errors internally (like host not found)
-	// We don't want to actually test the SSH connection in unit tests
+func TestRemoteCommandUsage(t *testing.T) {
+	if !strings.Contains(RootCmd.Long, "command") {
+		t.Error("Long description should mention remote command execution")
+	}
+
+	if !strings.Contains(RootCmd.Long, "uptime") {
+		t.Error("Long description should include command examples")
+	}
 }
 
 func TestRunInteractiveModeFunction(t *testing.T) {

cmd/search.go

@@ -205,6 +205,7 @@ func outputJSON(hosts []config.SSHHost) {
 		fmt.Printf("    \"port\": \"%s\",\n", escapeJSON(host.Port))
 		fmt.Printf("    \"identity\": \"%s\",\n", escapeJSON(host.Identity))
 		fmt.Printf("    \"proxy_jump\": \"%s\",\n", escapeJSON(host.ProxyJump))
+		fmt.Printf("    \"proxy_command\": \"%s\",\n", escapeJSON(host.ProxyCommand))
 		fmt.Printf("    \"options\": \"%s\",\n", escapeJSON(host.Options))
 		fmt.Printf("    \"tags\": [")
 		for j, tag := range host.Tags {

internal/config/appconfig.go

@@ -18,7 +18,16 @@ type KeyBindings struct {
 
 // AppConfig represents the main application configuration
 type AppConfig struct {
-	KeyBindings KeyBindings `json:"key_bindings"`
+	CheckForUpdates *bool       `json:"check_for_updates,omitempty"`
+	KeyBindings     KeyBindings `json:"key_bindings"`
+}
+
+// IsUpdateCheckEnabled returns true if the update check is enabled (default: true)
+func (c *AppConfig) IsUpdateCheckEnabled() bool {
+	if c == nil || c.CheckForUpdates == nil {
+		return true
+	}
+	return *c.CheckForUpdates
 }
 
 // GetDefaultKeyBindings returns the default key bindings configuration

internal/config/appconfig_test.go

@@ -104,6 +104,58 @@ func TestAppConfigBasics(t *testing.T) {
 	if len(defaultConfig.KeyBindings.QuitKeys) != len(expectedQuitKeys) {
 		t.Errorf("Expected %d quit keys, got %d", len(expectedQuitKeys), len(defaultConfig.KeyBindings.QuitKeys))
 	}
+
+	// CheckForUpdates should be nil by default
+	if defaultConfig.CheckForUpdates != nil {
+		t.Error("Default configuration should have CheckForUpdates as nil")
+	}
+
+	// IsUpdateCheckEnabled should return true by default
+	if !defaultConfig.IsUpdateCheckEnabled() {
+		t.Error("IsUpdateCheckEnabled should return true when CheckForUpdates is nil")
+	}
+}
+
+func boolPtr(b bool) *bool {
+	return &b
+}
+
+func TestIsUpdateCheckEnabled(t *testing.T) {
+	tests := []struct {
+		name     string
+		config   *AppConfig
+		expected bool
+	}{
+		{
+			name:     "nil AppConfig returns true",
+			config:   nil,
+			expected: true,
+		},
+		{
+			name:     "CheckForUpdates nil returns true",
+			config:   &AppConfig{},
+			expected: true,
+		},
+		{
+			name:     "CheckForUpdates true returns true",
+			config:   &AppConfig{CheckForUpdates: boolPtr(true)},
+			expected: true,
+		},
+		{
+			name:     "CheckForUpdates false returns false",
+			config:   &AppConfig{CheckForUpdates: boolPtr(false)},
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := tt.config.IsUpdateCheckEnabled()
+			if result != tt.expected {
+				t.Errorf("IsUpdateCheckEnabled() = %v, expected %v", result, tt.expected)
+			}
+		})
+	}
 }
 
 func TestMergeWithDefaults(t *testing.T) {
@@ -141,6 +193,7 @@ func TestSaveAndLoadAppConfigIntegration(t *testing.T) {
 	configPath := filepath.Join(tempDir, "config.json")
 
 	customConfig := AppConfig{
+		CheckForUpdates: boolPtr(false),
 		KeyBindings: KeyBindings{
 			QuitKeys:       []string{"q"},
 			DisableEscQuit: true,
@@ -178,4 +231,15 @@ func TestSaveAndLoadAppConfigIntegration(t *testing.T) {
 	if len(loadedConfig.KeyBindings.QuitKeys) != 1 || loadedConfig.KeyBindings.QuitKeys[0] != "q" {
 		t.Errorf("Expected quit keys to be ['q'], got %v", loadedConfig.KeyBindings.QuitKeys)
 	}
+
+	// Verify CheckForUpdates is correctly persisted and reloaded
+	if loadedConfig.CheckForUpdates == nil {
+		t.Fatal("CheckForUpdates should not be nil after round-trip")
+	}
+	if *loadedConfig.CheckForUpdates != false {
+		t.Errorf("CheckForUpdates should be false after round-trip, got %v", *loadedConfig.CheckForUpdates)
+	}
+	if loadedConfig.IsUpdateCheckEnabled() {
+		t.Error("IsUpdateCheckEnabled should return false when CheckForUpdates is false")
+	}
 }

internal/config/ssh.go

@@ -11,17 +11,33 @@ import (
 	"sync"
 )
 
+func getHomeDir() (string, error) {
+	home := os.Getenv("HOME")
+	if home != "" {
+		return home, nil
+	}
+	home = os.Getenv("USERPROFILE")
+	if home != "" {
+		return home, nil
+	}
+	return os.UserHomeDir()
+}
+
 // SSHHost represents an SSH host configuration
 type SSHHost struct {
-	Name       string
-	Hostname   string
-	User       string
-	Port       string
-	Identity   string
-	ProxyJump  string
-	Options    string
-	Tags       []string
-	SourceFile string // Path to the config file where this host is defined
+	Name          string
+	Hostname      string
+	User          string
+	Port          string
+	Identity      string
+	ProxyJump     string
+	ProxyCommand  string
+	Options       string
+	RemoteCommand string // Command to execute after SSH connection
+	RequestTTY    string // Request TTY (yes, no, force, auto)
+	Tags          []string
+	SourceFile    string // Path to the config file where this host is defined
+	LineNumber    int    // Line number in the source file where this host block starts (1-indexed)
 
 	// Temporary field to handle multiple aliases during parsing
 	aliasNames []string `json:"-"` // Do not serialize this field
@@ -29,7 +45,7 @@ type SSHHost struct {
 
 // GetDefaultSSHConfigPath returns the default SSH config path for the current platform
 func GetDefaultSSHConfigPath() (string, error) {
-	homeDir, err := os.UserHomeDir()
+	homeDir, err := getHomeDir()
 	if err != nil {
 		return "", err
 	}
@@ -45,7 +61,7 @@ func GetDefaultSSHConfigPath() (string, error) {
 
 // GetSSHMConfigDir returns the SSHM config directory
 func GetSSHMConfigDir() (string, error) {
-	homeDir, err := os.UserHomeDir()
+	homeDir, err := getHomeDir()
 	if err != nil {
 		return "", err
 	}
@@ -84,7 +100,7 @@ func GetSSHMBackupDir() (string, error) {
 
 // GetSSHDirectory returns the .ssh directory path
 func GetSSHDirectory() (string, error) {
-	homeDir, err := os.UserHomeDir()
+	homeDir, err := getHomeDir()
 	if err != nil {
 		return "", err
 	}
@@ -209,8 +225,10 @@ func parseSSHConfigFileWithProcessedFiles(configPath string, processedFiles map[
 	var currentHost *SSHHost
 	var pendingTags []string
 	scanner := bufio.NewScanner(file)
+	lineNumber := 0
 
 	for scanner.Scan() {
+		lineNumber++
 		line := strings.TrimSpace(scanner.Text())
 
 		// Ignore empty lines
@@ -277,8 +295,12 @@ func parseSSHConfigFileWithProcessedFiles(configPath string, processedFiles map[
 			hostNames := strings.Fields(value)
 
 			// Skip hosts with wildcards (*, ?) as they are typically patterns, not actual hosts
+			// Also remove surrounding quotes from host names
 			var validHostNames []string
 			for _, hostName := range hostNames {
+				// Remove surrounding double quotes if present
+				hostName = strings.Trim(hostName, `"`)
+
 				if !strings.ContainsAny(hostName, "*?") {
 					validHostNames = append(validHostNames, hostName)
 				}
@@ -297,6 +319,7 @@ func parseSSHConfigFileWithProcessedFiles(configPath string, processedFiles map[
 				Port:       "22",              // Default port
 				Tags:       pendingTags,       // Assign pending tags to this host
 				SourceFile: absPath,           // Track which file this host comes from
+				LineNumber: lineNumber,        // Track the line number where Host declaration starts
 			}
 
 			// Store additional host names for later processing
@@ -326,6 +349,18 @@ func parseSSHConfigFileWithProcessedFiles(configPath string, processedFiles map[
 			if currentHost != nil {
 				currentHost.ProxyJump = value
 			}
+		case "proxycommand":
+			if currentHost != nil {
+				currentHost.ProxyCommand = value
+			}
+		case "remotecommand":
+			if currentHost != nil {
+				currentHost.RemoteCommand = value
+			}
+		case "requesttty":
+			if currentHost != nil {
+				currentHost.RequestTTY = value
+			}
 		default:
 			// Handle other SSH options
 			if currentHost != nil && strings.TrimSpace(line) != "" {
@@ -363,7 +398,7 @@ func parseSSHConfigFileWithProcessedFiles(configPath string, processedFiles map[
 func processIncludeDirective(pattern string, baseConfigPath string, processedFiles map[string]bool) ([]SSHHost, error) {
 	// Expand tilde to home directory
 	if strings.HasPrefix(pattern, "~") {
-		homeDir, err := os.UserHomeDir()
+		homeDir, err := getHomeDir()
 		if err != nil {
 			return nil, fmt.Errorf("failed to get home directory: %w", err)
 		}
@@ -603,6 +638,27 @@ func AddSSHHostToFile(host SSHHost, configPath string) error {
 		}
 	}
 
+	if host.ProxyCommand != "" {
+		_, err = file.WriteString(fmt.Sprintf("    ProxyCommand=%s\n", host.ProxyCommand))
+		if err != nil {
+			return err
+		}
+	}
+
+	if host.RemoteCommand != "" {
+		_, err = file.WriteString(fmt.Sprintf("    RemoteCommand %s\n", host.RemoteCommand))
+		if err != nil {
+			return err
+		}
+	}
+
+	if host.RequestTTY != "" {
+		_, err = file.WriteString(fmt.Sprintf("    RequestTTY %s\n", host.RequestTTY))
+		if err != nil {
+			return err
+		}
+	}
+
 	// Write SSH options
 	if host.Options != "" {
 		// Split options by newlines and write each one
@@ -622,13 +678,34 @@ func AddSSHHostToFile(host SSHHost, configPath string) error {
 }
 
 // ParseSSHOptionsFromCommand converts SSH command line options to config format
-// Input: "-o Compression=yes -o ServerAliveInterval=60"
+// Input: "-o Compression=yes -o ServerAliveInterval=60" or "ForwardX11 true" or "Compression yes"
 // Output: "Compression yes\nServerAliveInterval 60"
 func ParseSSHOptionsFromCommand(options string) string {
 	if options == "" {
 		return ""
 	}
 
+	options = strings.TrimSpace(options)
+
+	// If it doesn't contain -o, assume it's already in config format
+	if !strings.Contains(options, "-o") {
+		// Just normalize spaces and ensure newlines between options
+		lines := strings.Split(options, "\n")
+		var result []string
+		for _, line := range lines {
+			line = strings.TrimSpace(line)
+			if line == "" {
+				continue
+			}
+			// Normalize spacing (replace multiple spaces with single space)
+			parts := strings.Fields(line)
+			if len(parts) > 0 {
+				result = append(result, strings.Join(parts, " "))
+			}
+		}
+		return strings.Join(result, "\n")
+	}
+
 	var result []string
 	parts := strings.Split(options, "-o")
 
@@ -654,6 +731,12 @@ func FormatSSHOptionsForCommand(options string) string {
 		return ""
 	}
 
+	// If already in command format (starts with -o), return as is
+	trimmed := strings.TrimSpace(options)
+	if strings.HasPrefix(trimmed, "-o ") {
+		return trimmed
+	}
+
 	var result []string
 	lines := strings.Split(options, "\n")
 
@@ -829,6 +912,9 @@ func quickHostSearchInFile(hostName string, configPath string, processedFiles ma
 
 			// Check if our target host is in this Host declaration
 			for _, candidateHostName := range hostNames {
+				// Remove surrounding double quotes if present
+				candidateHostName = strings.Trim(candidateHostName, `"`)
+
 				// Skip hosts with wildcards (*, ?) as they are typically patterns
 				if !strings.ContainsAny(candidateHostName, "*?") && candidateHostName == hostName {
 					return true, nil // Found the host!
@@ -844,7 +930,7 @@ func quickHostSearchInFile(hostName string, configPath string, processedFiles ma
 func quickSearchInclude(hostName, pattern, baseConfigPath string, processedFiles map[string]bool) (bool, error) {
 	// Expand tilde to home directory
 	if strings.HasPrefix(pattern, "~") {
-		homeDir, err := os.UserHomeDir()
+		homeDir, err := getHomeDir()
 		if err != nil {
 			return false, fmt.Errorf("failed to get home directory: %w", err)
 		}
@@ -1020,6 +1106,15 @@ func UpdateSSHHostInFile(oldName string, newHost SSHHost, configPath string) err
 						if newHost.ProxyJump != "" {
 							newLines = append(newLines, "    ProxyJump "+newHost.ProxyJump)
 						}
+						if newHost.ProxyCommand != "" {
+							newLines = append(newLines, "    ProxyCommand="+newHost.ProxyCommand)
+						}
+						if newHost.RemoteCommand != "" {
+							newLines = append(newLines, "    RemoteCommand "+newHost.RemoteCommand)
+						}
+						if newHost.RequestTTY != "" {
+							newLines = append(newLines, "    RequestTTY "+newHost.RequestTTY)
+						}
 						// Write SSH options
 						if newHost.Options != "" {
 							options := strings.Split(newHost.Options, "\n")
@@ -1068,6 +1163,15 @@ func UpdateSSHHostInFile(oldName string, newHost SSHHost, configPath string) err
 						if newHost.ProxyJump != "" {
 							newLines = append(newLines, "    ProxyJump "+newHost.ProxyJump)
 						}
+						if newHost.ProxyCommand != "" {
+							newLines = append(newLines, "    ProxyCommand="+newHost.ProxyCommand)
+						}
+						if newHost.RemoteCommand != "" {
+							newLines = append(newLines, "    RemoteCommand "+newHost.RemoteCommand)
+						}
+						if newHost.RequestTTY != "" {
+							newLines = append(newLines, "    RequestTTY "+newHost.RequestTTY)
+						}
 						// Write SSH options
 						if newHost.Options != "" {
 							options := strings.Split(newHost.Options, "\n")
@@ -1152,6 +1256,15 @@ func UpdateSSHHostInFile(oldName string, newHost SSHHost, configPath string) err
 					if newHost.ProxyJump != "" {
 						newLines = append(newLines, "    ProxyJump "+newHost.ProxyJump)
 					}
+					if newHost.ProxyCommand != "" {
+						newLines = append(newLines, "    ProxyCommand="+newHost.ProxyCommand)
+					}
+					if newHost.RemoteCommand != "" {
+						newLines = append(newLines, "    RemoteCommand "+newHost.RemoteCommand)
+					}
+					if newHost.RequestTTY != "" {
+						newLines = append(newLines, "    RequestTTY "+newHost.RequestTTY)
+					}
 					// Write SSH options
 					if newHost.Options != "" {
 						options := strings.Split(newHost.Options, "\n")
@@ -1200,6 +1313,15 @@ func UpdateSSHHostInFile(oldName string, newHost SSHHost, configPath string) err
 					if newHost.ProxyJump != "" {
 						newLines = append(newLines, "    ProxyJump "+newHost.ProxyJump)
 					}
+					if newHost.ProxyCommand != "" {
+						newLines = append(newLines, "    ProxyCommand="+newHost.ProxyCommand)
+					}
+					if newHost.RemoteCommand != "" {
+						newLines = append(newLines, "    RemoteCommand "+newHost.RemoteCommand)
+					}
+					if newHost.RequestTTY != "" {
+						newLines = append(newLines, "    RequestTTY "+newHost.RequestTTY)
+					}
 					// Write SSH options
 					if newHost.Options != "" {
 						options := strings.Split(newHost.Options, "\n")
@@ -1235,11 +1357,21 @@ func UpdateSSHHostInFile(oldName string, newHost SSHHost, configPath string) err
 
 // DeleteSSHHost removes an SSH host configuration from the config file
 func DeleteSSHHost(hostName string) error {
-	return DeleteSSHHostV2(hostName)
+	return DeleteSSHHostV2(hostName, 0) // Legacy: without line number
+}
+
+// DeleteSSHHostWithLine deletes a specific SSH host by name and line number
+func DeleteSSHHostWithLine(host SSHHost) error {
+	return DeleteSSHHostFromFileWithLine(host.Name, host.SourceFile, host.LineNumber)
 }
 
 // DeleteSSHHostFromFile deletes an SSH host from a specific config file
 func DeleteSSHHostFromFile(hostName, configPath string) error {
+	return DeleteSSHHostFromFileWithLine(hostName, configPath, 0) // Legacy: without line number
+}
+
+// DeleteSSHHostFromFileWithLine deletes an SSH host from a specific config file at a specific line
+func DeleteSSHHostFromFileWithLine(hostName, configPath string, targetLineNumber int) error {
 	configMutex.Lock()
 	defer configMutex.Unlock()
 
@@ -1266,11 +1398,13 @@ func DeleteSSHHostFromFile(hostName, configPath string) error {
 	hostFound := false
 
 	for i < len(lines) {
+		currentLineNumber := i + 1 // Convert 0-indexed to 1-indexed
 		line := strings.TrimSpace(lines[i])
 
 		// Check for tags comment followed by Host
 		if strings.HasPrefix(line, "# Tags:") && i+1 < len(lines) {
 			nextLine := strings.TrimSpace(lines[i+1])
+			nextLineNumber := i + 2 // The Host line is at i+1, so its 1-indexed number is i+2
 
 			// Check if this is a Host line that contains our target host
 			if strings.HasPrefix(nextLine, "Host ") {
@@ -1286,7 +1420,10 @@ func DeleteSSHHostFromFile(hostName, configPath string) error {
 					}
 				}
 
-				if targetHostIndex != -1 {
+				// Only proceed if:
+				// 1. We found the host name
+				// 2. Either no line number was specified (targetLineNumber == 0) OR the line numbers match
+				if targetHostIndex != -1 && (targetLineNumber == 0 || nextLineNumber == targetLineNumber) {
 					hostFound = true
 
 					if isMultiHost && len(hostNames) > 1 {
@@ -1324,7 +1461,12 @@ func DeleteSSHHostFromFile(hostName, configPath string) error {
 							i++
 						}
 
-						continue
+						// Copy remaining lines and break to prevent deleting other duplicates
+						for i < len(lines) {
+							newLines = append(newLines, lines[i])
+							i++
+						}
+						break
 					} else {
 						// Single host or last host in multi-host block, delete entire block
 						// Skip tags comment and Host line
@@ -1340,7 +1482,12 @@ func DeleteSSHHostFromFile(hostName, configPath string) error {
 							i++
 						}
 
-						continue
+						// Copy remaining lines and break to prevent deleting other duplicates
+						for i < len(lines) {
+							newLines = append(newLines, lines[i])
+							i++
+						}
+						break
 					}
 				}
 			}
@@ -1360,7 +1507,10 @@ func DeleteSSHHostFromFile(hostName, configPath string) error {
 				}
 			}
 
-			if targetHostIndex != -1 {
+			// Only proceed if:
+			// 1. We found the host name
+			// 2. Either no line number was specified (targetLineNumber == 0) OR the line numbers match
+			if targetHostIndex != -1 && (targetLineNumber == 0 || currentLineNumber == targetLineNumber) {
 				hostFound = true
 
 				if isMultiHost && len(hostNames) > 1 {
@@ -1395,7 +1545,12 @@ func DeleteSSHHostFromFile(hostName, configPath string) error {
 						i++
 					}
 
-					continue
+					// Copy remaining lines and break to prevent deleting other duplicates
+					for i < len(lines) {
+						newLines = append(newLines, lines[i])
+						i++
+					}
+					break
 				} else {
 					// Single host, delete entire block
 					// Skip Host line
@@ -1411,7 +1566,12 @@ func DeleteSSHHostFromFile(hostName, configPath string) error {
 						i++
 					}
 
-					continue
+					// Copy remaining lines and break to prevent deleting other duplicates
+					for i < len(lines) {
+						newLines = append(newLines, lines[i])
+						i++
+					}
+					break
 				}
 			}
 		}
@@ -1494,15 +1654,15 @@ func UpdateSSHHostV2(oldName string, newHost SSHHost) error {
 }
 
 // DeleteSSHHostV2 removes an SSH host configuration, searching in all config files
-func DeleteSSHHostV2(hostName string) error {
+func DeleteSSHHostV2(hostName string, targetLineNumber int) error {
 	// Find the host to determine which file it's in
 	existingHost, err := FindHostInAllConfigs(hostName)
 	if err != nil {
 		return err
 	}
 
-	// Delete the host from its source file
-	return DeleteSSHHostFromFile(hostName, existingHost.SourceFile)
+	// Delete the host from its source file using line number if provided
+	return DeleteSSHHostFromFileWithLine(hostName, existingHost.SourceFile, targetLineNumber)
 }
 
 // AddSSHHostWithFileSelection adds a new SSH host to a user-specified config file
@@ -1694,6 +1854,15 @@ func UpdateMultiHostBlock(originalHosts, newHosts []string, commonProperties SSH
 					if commonProperties.ProxyJump != "" {
 						newLines = append(newLines, "    ProxyJump "+commonProperties.ProxyJump)
 					}
+					if commonProperties.ProxyCommand != "" {
+						newLines = append(newLines, "    ProxyCommand="+commonProperties.ProxyCommand)
+					}
+					if commonProperties.RemoteCommand != "" {
+						newLines = append(newLines, "    RemoteCommand "+commonProperties.RemoteCommand)
+					}
+					if commonProperties.RequestTTY != "" {
+						newLines = append(newLines, "    RequestTTY "+commonProperties.RequestTTY)
+					}
 
 					// Write SSH options
 					if commonProperties.Options != "" {
@@ -1774,6 +1943,15 @@ func UpdateMultiHostBlock(originalHosts, newHosts []string, commonProperties SSH
 				if commonProperties.ProxyJump != "" {
 					newLines = append(newLines, "    ProxyJump "+commonProperties.ProxyJump)
 				}
+				if commonProperties.ProxyCommand != "" {
+					newLines = append(newLines, "    ProxyCommand="+commonProperties.ProxyCommand)
+				}
+				if commonProperties.RemoteCommand != "" {
+					newLines = append(newLines, "    RemoteCommand "+commonProperties.RemoteCommand)
+				}
+				if commonProperties.RequestTTY != "" {
+					newLines = append(newLines, "    RequestTTY "+commonProperties.RequestTTY)
+				}
 
 				// Write SSH options
 				if commonProperties.Options != "" {

internal/config/ssh_test.go

@@ -456,15 +456,21 @@ func TestBackupConfigToSSHMDirectory(t *testing.T) {
 	// Create temporary directory for test files
 	tempDir := t.TempDir()
 
-	// Override the home directory for this test
 	originalHome := os.Getenv("HOME")
 	if originalHome == "" {
-		originalHome = os.Getenv("USERPROFILE") // Windows
+		originalHome = os.Getenv("USERPROFILE")
 	}
+	originalXDG := os.Getenv("XDG_CONFIG_HOME")
+	originalAppData := os.Getenv("APPDATA")
 
-	// Set test home directory
 	os.Setenv("HOME", tempDir)
-	defer os.Setenv("HOME", originalHome)
+	os.Setenv("XDG_CONFIG_HOME", tempDir)
+	os.Setenv("APPDATA", tempDir)
+	defer func() {
+		os.Setenv("HOME", originalHome)
+		os.Setenv("XDG_CONFIG_HOME", originalXDG)
+		os.Setenv("APPDATA", originalAppData)
+	}()
 
 	// Create a test SSH config file
 	sshDir := filepath.Join(tempDir, ".ssh")
@@ -1694,3 +1700,89 @@ Host production-server
 		}
 	}
 }
+
+func TestParseSSHConfigWithQuotedHostNames(t *testing.T) {
+	tempDir := t.TempDir()
+
+	configFile := filepath.Join(tempDir, "config")
+	configContent := `# Test hosts with quoted names (issue #32)
+Host "my-host-name-01"
+    HostName my-host-name-01.cwd.pub.domain.net
+    Port 2222
+    User my_user
+
+Host "qa-test-vm"
+    HostName qa-test-vm.example.com
+    User guillaume
+    Port 22
+
+Host normal-host
+    HostName normal.example.com
+    User testuser
+
+Host "quoted1" "quoted2"
+    HostName multi.example.com
+    User multiuser
+`
+
+	err := os.WriteFile(configFile, []byte(configContent), 0600)
+	if err != nil {
+		t.Fatalf("Failed to create config: %v", err)
+	}
+
+	hosts, err := ParseSSHConfigFile(configFile)
+	if err != nil {
+		t.Fatalf("ParseSSHConfigFile() error = %v", err)
+	}
+
+	// Should get 5 hosts: my-host-name-01, qa-test-vm, normal-host, quoted1, quoted2
+	// All without quotes
+	expectedHosts := map[string]struct{}{
+		"my-host-name-01": {},
+		"qa-test-vm":      {},
+		"normal-host":     {},
+		"quoted1":         {},
+		"quoted2":         {},
+	}
+
+	if len(hosts) != len(expectedHosts) {
+		t.Errorf("Expected %d hosts, got %d", len(expectedHosts), len(hosts))
+		for _, host := range hosts {
+			t.Logf("Found host: %q", host.Name)
+		}
+	}
+
+	hostMap := make(map[string]SSHHost)
+	for _, host := range hosts {
+		// Verify no quotes in host names
+		if strings.Contains(host.Name, `"`) {
+			t.Errorf("Host name %q still contains quotes", host.Name)
+		}
+		hostMap[host.Name] = host
+	}
+
+	for expectedHostName := range expectedHosts {
+		if _, found := hostMap[expectedHostName]; !found {
+			t.Errorf("Expected host %q not found", expectedHostName)
+		}
+	}
+
+	// Verify specific host details
+	if host, found := hostMap["my-host-name-01"]; found {
+		if host.Hostname != "my-host-name-01.cwd.pub.domain.net" {
+			t.Errorf("Host my-host-name-01 has wrong hostname: %q", host.Hostname)
+		}
+		if host.Port != "2222" {
+			t.Errorf("Host my-host-name-01 has wrong port: %q", host.Port)
+		}
+		if host.User != "my_user" {
+			t.Errorf("Host my-host-name-01 has wrong user: %q", host.User)
+		}
+	}
+
+	if host, found := hostMap["qa-test-vm"]; found {
+		if host.Hostname != "qa-test-vm.example.com" {
+			t.Errorf("Host qa-test-vm has wrong hostname: %q", host.Hostname)
+		}
+	}
+}

internal/connectivity/ping.go

@@ -2,12 +2,15 @@ package connectivity
 
 import (
 	"context"
+	"fmt"
 	"net"
-	"github.com/Gu1llaum-3/sshm/internal/config"
+	"os/exec"
 	"strings"
 	"sync"
 	"time"
 
+	"github.com/Gu1llaum-3/sshm/internal/config"
+
 	"golang.org/x/crypto/ssh"
 )
 
@@ -45,16 +48,18 @@ type HostPingResult struct {
 
 // PingManager manages SSH connectivity checks for multiple hosts
 type PingManager struct {
-	results map[string]*HostPingResult
-	mutex   sync.RWMutex
-	timeout time.Duration
+	results    map[string]*HostPingResult
+	mutex      sync.RWMutex
+	timeout    time.Duration
+	configFile string
 }
 
 // NewPingManager creates a new ping manager with the specified timeout
-func NewPingManager(timeout time.Duration) *PingManager {
+func NewPingManager(timeout time.Duration, configFile string) *PingManager {
 	return &PingManager{
-		results: make(map[string]*HostPingResult),
-		timeout: timeout,
+		results:    make(map[string]*HostPingResult),
+		timeout:    timeout,
+		configFile: configFile,
 	}
 }
 
@@ -98,6 +103,14 @@ func (pm *PingManager) PingHost(ctx context.Context, host config.SSHHost) *HostP
 	// Mark as connecting
 	pm.updateStatus(host.Name, StatusConnecting, nil, 0)
 
+	// If the host uses a ProxyJump or ProxyCommand, we need to use the external SSH command
+	// because implementing jump host support with pure Go ssh library requires
+	// handling authentication for the jump host, which is complex and requires
+	// access to the user's SSH agent or keys.
+	if host.ProxyJump != "" || host.ProxyCommand != "" {
+		return pm.pingWithExternalCommand(ctx, host, start)
+	}
+
 	// Determine the actual hostname and port
 	hostname := host.Hostname
 	if hostname == "" {
@@ -159,6 +172,53 @@ func (pm *PingManager) PingHost(ctx context.Context, host config.SSHHost) *HostP
 	}
 }
 
+// pingWithExternalCommand pings a host using the external SSH command
+func (pm *PingManager) pingWithExternalCommand(ctx context.Context, host config.SSHHost, start time.Time) *HostPingResult {
+	// Construct the SSH command
+	// ssh -q -o BatchMode=yes -o StrictHostKeyChecking=no -o ConnectTimeout=5 host exit
+	args := []string{"-q", "-o", "BatchMode=yes", "-o", "StrictHostKeyChecking=no"}
+
+	// Set timeout matching the manager's timeout
+	// Convert duration to seconds (rounding up to ensure we don't timeout too early in the command)
+	timeoutSec := int(pm.timeout.Seconds())
+	if timeoutSec < 1 {
+		timeoutSec = 1
+	}
+	args = append(args, "-o", fmt.Sprintf("ConnectTimeout=%d", timeoutSec))
+
+	// If we have a specific config file, use it
+	if pm.configFile != "" {
+		args = append(args, "-F", pm.configFile)
+	}
+
+	// Add the host name and the command to run (exit)
+	args = append(args, host.Name, "exit")
+
+	// Create command with context for timeout cancellation
+	// Note: We used pm.timeout for the ssh command option, but we also respect the context deadline
+	cmd := exec.CommandContext(ctx, "ssh", args...)
+
+	// Run the command
+	err := cmd.Run()
+	duration := time.Since(start)
+
+	var status PingStatus
+	if err != nil {
+		// SSH returns non-zero exit code on connection failure
+		status = StatusOffline
+	} else {
+		status = StatusOnline
+	}
+
+	pm.updateStatus(host.Name, status, err, duration)
+	return &HostPingResult{
+		HostName: host.Name,
+		Status:   status,
+		Error:    err,
+		Duration: duration,
+	}
+}
+
 // PingAllHosts pings all hosts concurrently and returns a channel of results
 func (pm *PingManager) PingAllHosts(ctx context.Context, hosts []config.SSHHost) <-chan *HostPingResult {
 	resultChan := make(chan *HostPingResult, len(hosts))

internal/connectivity/ping_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 func TestNewPingManager(t *testing.T) {
-	pm := NewPingManager(5 * time.Second)
+	pm := NewPingManager(5*time.Second, "")
 	if pm == nil {
 		t.Error("NewPingManager() returned nil")
 	}
@@ -19,7 +19,7 @@ func TestNewPingManager(t *testing.T) {
 }
 
 func TestPingManager_PingHost(t *testing.T) {
-	pm := NewPingManager(1 * time.Second)
+	pm := NewPingManager(1*time.Second, "")
 	ctx := context.Background()
 
 	// Test ping method exists and doesn't panic
@@ -38,7 +38,7 @@ func TestPingManager_PingHost(t *testing.T) {
 }
 
 func TestPingManager_GetStatus(t *testing.T) {
-	pm := NewPingManager(1 * time.Second)
+	pm := NewPingManager(1*time.Second, "")
 
 	// Test unknown host
 	status := pm.GetStatus("unknown.host")
@@ -57,7 +57,7 @@ func TestPingManager_GetStatus(t *testing.T) {
 }
 
 func TestPingManager_PingMultipleHosts(t *testing.T) {
-	pm := NewPingManager(1 * time.Second)
+	pm := NewPingManager(1*time.Second, "")
 	hosts := []config.SSHHost{
 		{Name: "localhost", Hostname: "127.0.0.1", Port: "22"},
 		{Name: "invalid", Hostname: "invalid.host.12345", Port: "22"},
@@ -81,7 +81,7 @@ func TestPingManager_PingMultipleHosts(t *testing.T) {
 }
 
 func TestPingManager_GetResult(t *testing.T) {
-	pm := NewPingManager(1 * time.Second)
+	pm := NewPingManager(1*time.Second, "")
 	ctx := context.Background()
 
 	// Test getting result for unknown host
@@ -126,7 +126,7 @@ func TestPingStatus_String(t *testing.T) {
 
 func TestPingHost_Basic(t *testing.T) {
 	// Test that the ping functionality exists
-	pm := NewPingManager(1 * time.Second)
+	pm := NewPingManager(1*time.Second, "")
 	ctx := context.Background()
 	host := config.SSHHost{Name: "test", Hostname: "127.0.0.1", Port: "22"}
 

internal/ui/add_form.go

@@ -1,6 +1,7 @@
 package ui
 
 import (
+	"fmt"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -16,6 +17,7 @@ import (
 type addFormModel struct {
 	inputs     []textinput.Model
 	focused    int
+	currentTab int // 0 = General, 1 = Advanced
 	err        string
 	styles     Styles
 	success    bool
@@ -47,7 +49,7 @@ func NewAddForm(hostname string, styles Styles, width, height int, configFile st
 		}
 	}
 
-	inputs := make([]textinput.Model, 8)
+	inputs := make([]textinput.Model, 11)
 
 	// Name input
 	inputs[nameInput] = textinput.New()
@@ -89,6 +91,12 @@ func NewAddForm(hostname string, styles Styles, width, height int, configFile st
 	inputs[proxyJumpInput].CharLimit = 200
 	inputs[proxyJumpInput].Width = 50
 
+	// ProxyCommand input
+	inputs[proxyCommandInput] = textinput.New()
+	inputs[proxyCommandInput].Placeholder = "ssh -W %h:%p Jumphost"
+	inputs[proxyCommandInput].CharLimit = 200
+	inputs[proxyCommandInput].Width = 50
+
 	// SSH Options input
 	inputs[optionsInput] = textinput.New()
 	inputs[optionsInput].Placeholder = "-o Compression=yes -o ServerAliveInterval=60"
@@ -101,9 +109,22 @@ func NewAddForm(hostname string, styles Styles, width, height int, configFile st
 	inputs[tagsInput].CharLimit = 200
 	inputs[tagsInput].Width = 50
 
+	// Remote Command input
+	inputs[remoteCommandInput] = textinput.New()
+	inputs[remoteCommandInput].Placeholder = "ls -la, htop, bash"
+	inputs[remoteCommandInput].CharLimit = 300
+	inputs[remoteCommandInput].Width = 70
+
+	// RequestTTY input
+	inputs[requestTTYInput] = textinput.New()
+	inputs[requestTTYInput].Placeholder = "yes, no, force, auto"
+	inputs[requestTTYInput].CharLimit = 10
+	inputs[requestTTYInput].Width = 30
+
 	return &addFormModel{
 		inputs:     inputs,
 		focused:    nameInput,
+		currentTab: tabGeneral, // Start on General tab
 		styles:     styles,
 		width:      width,
 		height:     height,
@@ -111,6 +132,11 @@ func NewAddForm(hostname string, styles Styles, width, height int, configFile st
 	}
 }
 
+const (
+	tabGeneral = iota
+	tabAdvanced
+)
+
 const (
 	nameInput = iota
 	hostnameInput
@@ -118,8 +144,12 @@ const (
 	portInput
 	identityInput
 	proxyJumpInput
+	proxyCommandInput
 	optionsInput
 	tagsInput
+	// Advanced tab inputs
+	remoteCommandInput
+	requestTTYInput
 )
 
 // Messages for communication with parent model
@@ -153,36 +183,20 @@ func (m *addFormModel) Update(msg tea.Msg) (*addFormModel, tea.Cmd) {
 			// Allow submission from any field with Ctrl+S (Save)
 			return m, m.submitForm()
 
+		case "ctrl+j":
+			// Switch to next tab
+			m.currentTab = (m.currentTab + 1) % 2
+			m.focused = m.getFirstInputForTab(m.currentTab)
+			return m, m.updateFocus()
+
+		case "ctrl+k":
+			// Switch to previous tab
+			m.currentTab = (m.currentTab - 1 + 2) % 2
+			m.focused = m.getFirstInputForTab(m.currentTab)
+			return m, m.updateFocus()
+
 		case "tab", "shift+tab", "enter", "up", "down":
-			s := msg.String()
-
-			// Handle form submission
-			if s == "enter" && m.focused == len(m.inputs)-1 {
-				return m, m.submitForm()
-			}
-
-			// Cycle inputs
-			if s == "up" || s == "shift+tab" {
-				m.focused--
-			} else {
-				m.focused++
-			}
-
-			if m.focused > len(m.inputs)-1 {
-				m.focused = 0
-			} else if m.focused < 0 {
-				m.focused = len(m.inputs) - 1
-			}
-
-			for i := range m.inputs {
-				if i == m.focused {
-					cmds = append(cmds, m.inputs[i].Focus())
-					continue
-				}
-				m.inputs[i].Blur()
-			}
-
-			return m, tea.Batch(cmds...)
+			return m, m.handleNavigation(msg.String())
 		}
 
 	case addFormSubmitMsg:
@@ -206,32 +220,122 @@ func (m *addFormModel) Update(msg tea.Msg) (*addFormModel, tea.Cmd) {
 	return m, tea.Batch(cmds...)
 }
 
+// getFirstInputForTab returns the first input index for a given tab
+func (m *addFormModel) getFirstInputForTab(tab int) int {
+	switch tab {
+	case tabGeneral:
+		return nameInput
+	case tabAdvanced:
+		return optionsInput
+	default:
+		return nameInput
+	}
+}
+
+// getInputsForCurrentTab returns the input indices for the current tab
+func (m *addFormModel) getInputsForCurrentTab() []int {
+	switch m.currentTab {
+	case tabGeneral:
+		return []int{nameInput, hostnameInput, userInput, portInput, identityInput, proxyJumpInput, proxyCommandInput, tagsInput}
+	case tabAdvanced:
+		return []int{optionsInput, remoteCommandInput, requestTTYInput}
+	default:
+		return []int{nameInput, hostnameInput, userInput, portInput, identityInput, proxyJumpInput, proxyCommandInput, tagsInput}
+	}
+}
+
+// updateFocus updates focus for inputs
+func (m *addFormModel) updateFocus() tea.Cmd {
+	var cmds []tea.Cmd
+	for i := range m.inputs {
+		if i == m.focused {
+			cmds = append(cmds, m.inputs[i].Focus())
+		} else {
+			m.inputs[i].Blur()
+		}
+	}
+	return tea.Batch(cmds...)
+}
+
+// handleNavigation handles tab/arrow navigation within the current tab
+func (m *addFormModel) handleNavigation(key string) tea.Cmd {
+	currentTabInputs := m.getInputsForCurrentTab()
+
+	// Find current position within the tab
+	currentPos := 0
+	for i, input := range currentTabInputs {
+		if input == m.focused {
+			currentPos = i
+			break
+		}
+	}
+
+	// Handle form submission on last field of Advanced tab
+	if key == "enter" && m.currentTab == tabAdvanced && currentPos == len(currentTabInputs)-1 {
+		return m.submitForm()
+	}
+
+	// Navigate within current tab
+	if key == "up" || key == "shift+tab" {
+		currentPos--
+	} else {
+		currentPos++
+	}
+
+	// Handle transitions between tabs
+	if currentPos >= len(currentTabInputs) {
+		// Move to next tab
+		if m.currentTab == tabGeneral {
+			// Move to advanced tab
+			m.currentTab = tabAdvanced
+			m.focused = m.getFirstInputForTab(tabAdvanced)
+			return m.updateFocus()
+		} else {
+			// Wrap around to first field of current tab
+			currentPos = 0
+		}
+	} else if currentPos < 0 {
+		// Move to previous tab
+		if m.currentTab == tabAdvanced {
+			// Move to general tab
+			m.currentTab = tabGeneral
+			currentTabInputs = m.getInputsForCurrentTab()
+			currentPos = len(currentTabInputs) - 1
+		} else {
+			// Wrap around to last field of current tab
+			currentPos = len(currentTabInputs) - 1
+		}
+	}
+
+	m.focused = currentTabInputs[currentPos]
+	return m.updateFocus()
+}
+
 func (m *addFormModel) View() string {
 	if m.success {
 		return ""
 	}
 
+	// Check if terminal height is sufficient
+	if !m.isHeightSufficient() {
+		return m.renderHeightWarning()
+	}
+
 	var b strings.Builder
 
 	b.WriteString(m.styles.FormTitle.Render("Add SSH Host Configuration"))
 	b.WriteString("\n\n")
 
-	fields := []string{
-		"Host Name *",
-		"Hostname/IP *",
-		"User",
-		"Port",
-		"Identity File",
-		"ProxyJump",
-		"SSH Options",
-		"Tags (comma-separated)",
-	}
+	// Render tabs
+	b.WriteString(m.renderTabs())
+	b.WriteString("\n\n")
 
-	for i, field := range fields {
-		b.WriteString(m.styles.FormField.Render(field))
-		b.WriteString("\n")
-		b.WriteString(m.inputs[i].View())
-		b.WriteString("\n\n")
+	// Render current tab content
+	switch m.currentTab {
+	case tabGeneral:
+		b.WriteString(m.renderGeneralTab())
+	case tabAdvanced:
+		b.WriteString(m.renderAdvancedTab())
 	}
 
 	if m.err != "" {
@@ -239,13 +343,134 @@ func (m *addFormModel) View() string {
 		b.WriteString("\n\n")
 	}
 
-	b.WriteString(m.styles.FormHelp.Render("Tab/Shift+Tab: navigate • Enter on last field: submit • Ctrl+S: save • Ctrl+C/Esc: cancel"))
+	// Help text
+	b.WriteString(m.styles.FormHelp.Render("Tab/Shift+Tab: navigate • Ctrl+J/K: switch tabs"))
+	b.WriteString("\n")
+	b.WriteString(m.styles.FormHelp.Render("Enter on last field: submit • Ctrl+S: save • Ctrl+C/Esc: cancel"))
 	b.WriteString("\n")
 	b.WriteString(m.styles.FormHelp.Render("* Required fields"))
 
 	return b.String()
 }
 
+// getMinimumHeight calculates the minimum height needed to display the form
+func (m *addFormModel) getMinimumHeight() int {
+	// Title: 1 line + 2 newlines = 3
+	titleLines := 3
+	// Tabs: 1 line + 2 newlines = 3
+	tabLines := 3
+	// Fields in current tab
+	var fieldsCount int
+	if m.currentTab == tabGeneral {
+		fieldsCount = 7 // 7 fields in general tab
+	} else {
+		fieldsCount = 3 // 3 fields in advanced tab
+	}
+	// Each field: label (1) + input (1) + spacing (2) = 4 lines per field, but let's be more conservative
+	fieldsLines := fieldsCount * 3 // Reduced from 4 to 3
+	// Help text: 3 lines
+	helpLines := 3
+	// Error message space when needed: 2 lines
+	errorLines := 0 // Only count when there's actually an error
+	if m.err != "" {
+		errorLines = 2
+	}
+
+	return titleLines + tabLines + fieldsLines + helpLines + errorLines + 1 // +1 minimal safety margin
+}
+
+// isHeightSufficient checks if the current terminal height is sufficient
+func (m *addFormModel) isHeightSufficient() bool {
+	return m.height >= m.getMinimumHeight()
+}
+
+// renderHeightWarning renders a warning message when height is insufficient
+func (m *addFormModel) renderHeightWarning() string {
+	required := m.getMinimumHeight()
+	current := m.height
+
+	warning := m.styles.ErrorText.Render("⚠️  Terminal height is too small!")
+	details := m.styles.FormField.Render(fmt.Sprintf("Current: %d lines, Required: %d lines", current, required))
+	instruction := m.styles.FormHelp.Render("Please resize your terminal window and try again.")
+	instruction2 := m.styles.FormHelp.Render("Press Ctrl+C to cancel or resize terminal window.")
+
+	return warning + "\n\n" + details + "\n\n" + instruction + "\n" + instruction2
+}
+
+// renderTabs renders the tab headers
+func (m *addFormModel) renderTabs() string {
+	var generalTab, advancedTab string
+
+	if m.currentTab == tabGeneral {
+		generalTab = m.styles.FocusedLabel.Render("[ General ]")
+		advancedTab = m.styles.FormField.Render("  Advanced  ")
+	} else {
+		generalTab = m.styles.FormField.Render("  General  ")
+		advancedTab = m.styles.FocusedLabel.Render("[ Advanced ]")
+	}
+
+	return generalTab + "  " + advancedTab
+}
+
+// renderGeneralTab renders the general tab content
+func (m *addFormModel) renderGeneralTab() string {
+	var b strings.Builder
+
+	fields := []struct {
+		index int
+		label string
+	}{
+		{nameInput, "Host Name *"},
+		{hostnameInput, "Hostname/IP *"},
+		{userInput, "User"},
+		{portInput, "Port"},
+		{identityInput, "Identity File"},
+		{proxyJumpInput, "ProxyJump"},
+		{proxyCommandInput, "ProxyCommand"},
+		{tagsInput, "Tags (comma-separated)"},
+	}
+
+	for _, field := range fields {
+		fieldStyle := m.styles.FormField
+		if m.focused == field.index {
+			fieldStyle = m.styles.FocusedLabel
+		}
+		b.WriteString(fieldStyle.Render(field.label))
+		b.WriteString("\n")
+		b.WriteString(m.inputs[field.index].View())
+		b.WriteString("\n\n")
+	}
+
+	return b.String()
+}
+
+// renderAdvancedTab renders the advanced tab content
+func (m *addFormModel) renderAdvancedTab() string {
+	var b strings.Builder
+
+	fields := []struct {
+		index int
+		label string
+	}{
+		{optionsInput, "SSH Options"},
+		{remoteCommandInput, "Remote Command"},
+		{requestTTYInput, "Request TTY"},
+	}
+
+	for _, field := range fields {
+		fieldStyle := m.styles.FormField
+		if m.focused == field.index {
+			fieldStyle = m.styles.FocusedLabel
+		}
+		b.WriteString(fieldStyle.Render(field.label))
+		b.WriteString("\n")
+		b.WriteString(m.inputs[field.index].View())
+		b.WriteString("\n\n")
+	}
+
+	return b.String()
+}
+
 // Standalone wrapper for add form
 type standaloneAddForm struct {
 	*addFormModel
@@ -290,7 +515,10 @@ func (m *addFormModel) submitForm() tea.Cmd {
 		port := strings.TrimSpace(m.inputs[portInput].Value())
 		identity := strings.TrimSpace(m.inputs[identityInput].Value())
 		proxyJump := strings.TrimSpace(m.inputs[proxyJumpInput].Value())
+		proxyCommand := strings.TrimSpace(m.inputs[proxyCommandInput].Value())
 		options := strings.TrimSpace(m.inputs[optionsInput].Value())
+		remoteCommand := strings.TrimSpace(m.inputs[remoteCommandInput].Value())
+		requestTTY := strings.TrimSpace(m.inputs[requestTTYInput].Value())
 
 		// Set defaults
 		if user == "" {
@@ -319,14 +547,17 @@ func (m *addFormModel) submitForm() tea.Cmd {
 
 		// Create host configuration
 		host := config.SSHHost{
-			Name:      name,
-			Hostname:  hostname,
-			User:      user,
-			Port:      port,
-			Identity:  identity,
-			ProxyJump: proxyJump,
-			Options:   config.ParseSSHOptionsFromCommand(options),
-			Tags:      tags,
+			Name:          name,
+			Hostname:      hostname,
+			User:          user,
+			Port:          port,
+			Identity:      identity,
+			ProxyJump:     proxyJump,
+			ProxyCommand:  proxyCommand,
+			Options:       config.ParseSSHOptionsFromCommand(options),
+			RemoteCommand: remoteCommand,
+			RequestTTY:    requestTTY,
+			Tags:          tags,
 		}
 
 		// Add to config

internal/ui/edit_form.go

@@ -9,7 +9,6 @@ import (
 
 	"github.com/charmbracelet/bubbles/textinput"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/charmbracelet/lipgloss"
 )
 
 const (
@@ -29,8 +28,8 @@ type editFormModel struct {
 	inputs           []textinput.Model
 	focusArea        int // 0=hosts, 1=properties
 	focused          int
+	currentTab       int // 0=General, 1=Advanced (only applies when focusArea == focusAreaProperties)
 	err              string
-	success          bool
 	styles           Styles
 	originalName     string
 	originalHosts    []string        // Store original host names for multi-host detection
@@ -92,7 +91,7 @@ func NewEditForm(hostName string, styles Styles, width, height int, configFile s
 		}
 	}
 
-	inputs := make([]textinput.Model, 7) // Reduced from 8 since we removed nameInput
+	inputs := make([]textinput.Model, 10)
 
 	// Hostname input
 	inputs[0] = textinput.New()
@@ -129,29 +128,51 @@ func NewEditForm(hostName string, styles Styles, width, height int, configFile s
 	inputs[4].Width = 30
 	inputs[4].SetValue(host.ProxyJump)
 
-	// Options input
+	// ProxyCommand input
 	inputs[5] = textinput.New()
-	inputs[5].Placeholder = "-o StrictHostKeyChecking=no"
+	inputs[5].Placeholder = "ssh -W %h:%p Jumphost"
 	inputs[5].CharLimit = 200
 	inputs[5].Width = 50
+	inputs[5].SetValue(host.ProxyCommand)
+
+	// Options input
+	inputs[6] = textinput.New()
+	inputs[6].Placeholder = "-o StrictHostKeyChecking=no"
+	inputs[6].CharLimit = 200
+	inputs[6].Width = 50
 	if host.Options != "" {
-		inputs[5].SetValue(config.FormatSSHOptionsForCommand(host.Options))
+		inputs[6].SetValue(config.FormatSSHOptionsForCommand(host.Options))
 	}
 
 	// Tags input
-	inputs[6] = textinput.New()
-	inputs[6].Placeholder = "production, web, database"
-	inputs[6].CharLimit = 200
-	inputs[6].Width = 50
+	inputs[7] = textinput.New()
+	inputs[7].Placeholder = "production, web, database"
+	inputs[7].CharLimit = 200
+	inputs[7].Width = 50
 	if len(host.Tags) > 0 {
-		inputs[6].SetValue(strings.Join(host.Tags, ", "))
+		inputs[7].SetValue(strings.Join(host.Tags, ", "))
 	}
 
+	// Remote Command input
+	inputs[8] = textinput.New()
+	inputs[8].Placeholder = "ls -la, htop, bash"
+	inputs[8].CharLimit = 300
+	inputs[8].Width = 70
+	inputs[8].SetValue(host.RemoteCommand)
+
+	// RequestTTY input
+	inputs[9] = textinput.New()
+	inputs[9].Placeholder = "yes, no, force, auto"
+	inputs[9].CharLimit = 10
+	inputs[9].Width = 30
+	inputs[9].SetValue(host.RequestTTY)
+
 	return &editFormModel{
 		hostInputs:       hostInputs,
 		inputs:           inputs,
 		focusArea:        focusAreaHosts, // Start with hosts focused for multi-host editing
 		focused:          0,
+		currentTab:       0, // Start on General tab
 		originalName:     hostName,
 		originalHosts:    hostNames,
 		host:             host,
@@ -235,6 +256,157 @@ func (m *editFormModel) updateFocus() tea.Cmd {
 	return textinput.Blink
 }
 
+// getPropertiesForCurrentTab returns the property input indices for the current tab
+func (m *editFormModel) getPropertiesForCurrentTab() []int {
+	switch m.currentTab {
+	case 0: // General
+		return []int{0, 1, 2, 3, 4, 5, 7} // hostname, user, port, identity, proxyjump, proxycommand, tags
+	case 1: // Advanced
+		return []int{6, 8, 9} // options, remotecommand, requesttty
+	default:
+		return []int{0, 1, 2, 3, 4, 5, 7}
+	}
+}
+
+// getFirstPropertyForTab returns the first property index for a given tab
+func (m *editFormModel) getFirstPropertyForTab(tab int) int {
+	properties := []int{0, 1, 2, 3, 4, 5, 7} // General tab
+	if tab == 1 {
+		properties = []int{6, 8, 9} // Advanced tab
+	}
+	if len(properties) > 0 {
+		return properties[0]
+	}
+	return 0
+}
+
+// handleEditNavigation handles navigation in the edit form with tab support
+func (m *editFormModel) handleEditNavigation(key string) tea.Cmd {
+	if m.focusArea == focusAreaHosts {
+		// Navigate in hosts area
+		if key == "up" || key == "shift+tab" {
+			m.focused--
+		} else {
+			m.focused++
+		}
+
+		if m.focused >= len(m.hostInputs) {
+			// Move to properties area, keep current tab
+			m.focusArea = focusAreaProperties
+			// Keep the current tab instead of forcing it to 0
+			m.focused = m.getFirstPropertyForTab(m.currentTab)
+		} else if m.focused < 0 {
+			m.focused = len(m.hostInputs) - 1
+		}
+	} else {
+		// Navigate in properties area within current tab
+		currentTabProperties := m.getPropertiesForCurrentTab()
+
+		// Find current position within the tab
+		currentPos := 0
+		for i, prop := range currentTabProperties {
+			if prop == m.focused {
+				currentPos = i
+				break
+			}
+		}
+
+		// Handle form submission on last field of Advanced tab
+		if key == "enter" && m.currentTab == 1 && currentPos == len(currentTabProperties)-1 {
+			return m.submitEditForm()
+		}
+
+		// Navigate within current tab
+		if key == "up" || key == "shift+tab" {
+			currentPos--
+		} else {
+			currentPos++
+		}
+
+		// Handle transitions between areas and tabs
+		if currentPos >= len(currentTabProperties) {
+			// Move to next area/tab
+			if m.currentTab == 0 {
+				// Move to advanced tab
+				m.currentTab = 1
+				m.focused = m.getFirstPropertyForTab(1)
+			} else {
+				// Move back to hosts area
+				m.focusArea = focusAreaHosts
+				m.focused = 0
+			}
+		} else if currentPos < 0 {
+			// Move to previous area/tab
+			if m.currentTab == 1 {
+				// Move to general tab
+				m.currentTab = 0
+				properties := m.getPropertiesForCurrentTab()
+				m.focused = properties[len(properties)-1]
+			} else {
+				// Move to hosts area
+				m.focusArea = focusAreaHosts
+				m.focused = len(m.hostInputs) - 1
+			}
+		} else {
+			m.focused = currentTabProperties[currentPos]
+		}
+	}
+
+	return m.updateFocus()
+}
+
+// getMinimumHeight calculates the minimum height needed to display the edit form
+func (m *editFormModel) getMinimumHeight() int {
+	// Title: 1 line + 2 newlines = 3
+	titleLines := 3
+	// Config file info: 1 line + 2 newlines = 3
+	configLines := 3
+	// Host Names section: title (1) + spacing (2) = 3
+	hostSectionLines := 3
+	// Host inputs: number of hosts * 3 lines each (reduced from 4)
+	hostLines := len(m.hostInputs) * 3
+	// Properties section: title (1) + spacing (2) = 3
+	propertiesSectionLines := 3
+	// Tabs: 1 line + 2 newlines = 3
+	tabLines := 3
+	// Fields in current tab
+	var fieldsCount int
+	if m.currentTab == 0 {
+		fieldsCount = 6 // 6 fields in general tab
+	} else {
+		fieldsCount = 3 // 3 fields in advanced tab
+	}
+	// Each field: reduced from 4 to 3 lines per field
+	fieldsLines := fieldsCount * 3
+	// Help text: 3 lines
+	helpLines := 3
+	// Error message space when needed: 2 lines
+	errorLines := 0 // Only count when there's actually an error
+	if m.err != "" {
+		errorLines = 2
+	}
+
+	return titleLines + configLines + hostSectionLines + hostLines + propertiesSectionLines + tabLines + fieldsLines + helpLines + errorLines + 1 // +1 minimal safety margin
+}
+
+// isHeightSufficient checks if the current terminal height is sufficient
+func (m *editFormModel) isHeightSufficient() bool {
+	return m.height >= m.getMinimumHeight()
+}
+
+// renderHeightWarning renders a warning message when height is insufficient
+func (m *editFormModel) renderHeightWarning() string {
+	required := m.getMinimumHeight()
+	current := m.height
+
+	warning := m.styles.ErrorText.Render("⚠️  Terminal height is too small!")
+	details := m.styles.FormField.Render(fmt.Sprintf("Current: %d lines, Required: %d lines", current, required))
+	instruction := m.styles.FormHelp.Render("Please resize your terminal window and try again.")
+	instruction2 := m.styles.FormHelp.Render("Press Ctrl+C to cancel or resize terminal window.")
+
+	return warning + "\n\n" + details + "\n\n" + instruction + "\n" + instruction2
+}
+
 func (m *editFormModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	var cmds []tea.Cmd
 
@@ -247,51 +419,33 @@ func (m *editFormModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		switch msg.String() {
 		case "ctrl+c", "esc":
 			m.err = ""
-			m.success = false
 			return m, func() tea.Msg { return editFormCancelMsg{} }
 
 		case "ctrl+s":
 			// Allow submission from any field with Ctrl+S (Save)
 			return m, m.submitEditForm()
 
-		case "tab", "shift+tab", "enter", "up", "down":
-			s := msg.String()
-
-			// Handle form submission
-			totalFields := len(m.hostInputs) + len(m.inputs)
-			currentGlobalIndex := m.focused
+		case "ctrl+j":
+			// Switch to next tab
+			m.currentTab = (m.currentTab + 1) % 2
+			// If we're in hosts area, stay there. If in properties, go to the first field of the new tab
 			if m.focusArea == focusAreaProperties {
-				currentGlobalIndex = len(m.hostInputs) + m.focused
+				m.focused = m.getFirstPropertyForTab(m.currentTab)
 			}
-
-			if s == "enter" && currentGlobalIndex == totalFields-1 {
-				return m, m.submitEditForm()
-			}
-
-			// Cycle inputs
-			if s == "up" || s == "shift+tab" {
-				currentGlobalIndex--
-			} else {
-				currentGlobalIndex++
-			}
-
-			if currentGlobalIndex >= totalFields {
-				currentGlobalIndex = 0
-			} else if currentGlobalIndex < 0 {
-				currentGlobalIndex = totalFields - 1
-			}
-
-			// Update focus area and focused index based on global index
-			if currentGlobalIndex < len(m.hostInputs) {
-				m.focusArea = focusAreaHosts
-				m.focused = currentGlobalIndex
-			} else {
-				m.focusArea = focusAreaProperties
-				m.focused = currentGlobalIndex - len(m.hostInputs)
-			}
-
 			return m, m.updateFocus()
 
+		case "ctrl+k":
+			// Switch to previous tab
+			m.currentTab = (m.currentTab - 1 + 2) % 2
+			// If we're in hosts area, stay there. If in properties, go to the first field of the new tab
+			if m.focusArea == focusAreaProperties {
+				m.focused = m.getFirstPropertyForTab(m.currentTab)
+			}
+			return m, m.updateFocus()
+
+		case "tab", "shift+tab", "enter", "up", "down":
+			return m, m.handleEditNavigation(msg.String())
+
 		case "ctrl+a":
 			// Add a new host input
 			return m, m.addHostInput()
@@ -306,10 +460,10 @@ func (m *editFormModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	case editFormSubmitMsg:
 		if msg.err != nil {
 			m.err = msg.err.Error()
-			m.success = false
 		} else {
-			m.success = true
-			m.err = ""
+			// Success: let the wrapper handle this
+			// In TUI mode, this will be handled by the parent
+			// In standalone mode, the wrapper will quit
 		}
 		return m, nil
 	}
@@ -332,15 +486,13 @@ func (m *editFormModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 }
 
 func (m *editFormModel) View() string {
-	var b strings.Builder
-
-	if m.success {
-		b.WriteString(m.styles.FormField.Foreground(lipgloss.Color("#10B981")).Render("✓ Host updated successfully!"))
-		b.WriteString("\n\n")
-		b.WriteString(m.styles.FormHelp.Render("Press Ctrl+C or Esc to go back"))
-		return b.String()
+	// Check if terminal height is sufficient
+	if !m.isHeightSufficient() {
+		return m.renderHeightWarning()
 	}
 
+	var b strings.Builder
+
 	if m.err != "" {
 		b.WriteString(m.styles.Error.Render("Error: " + m.err))
 		b.WriteString("\n\n")
@@ -377,25 +529,16 @@ func (m *editFormModel) View() string {
 	b.WriteString(m.styles.FormTitle.Render("Common Properties"))
 	b.WriteString("\n\n")
 
-	fields := []string{
-		"Hostname/IP *",
-		"User",
-		"Port",
-		"Identity File",
-		"Proxy Jump",
-		"SSH Options",
-		"Tags (comma-separated)",
-	}
+	// Render tabs for properties
+	b.WriteString(m.renderEditTabs())
+	b.WriteString("\n\n")
 
-	for i, field := range fields {
-		fieldStyle := m.styles.FormField
-		if m.focusArea == focusAreaProperties && m.focused == i {
-			fieldStyle = m.styles.FocusedLabel
-		}
-		b.WriteString(fieldStyle.Render(field))
-		b.WriteString("\n")
-		b.WriteString(m.inputs[i].View())
-		b.WriteString("\n\n")
+	// Render current tab content
+	switch m.currentTab {
+	case 0: // General
+		b.WriteString(m.renderEditGeneralTab())
+	case 1: // Advanced
+		b.WriteString(m.renderEditAdvancedTab())
 	}
 
 	if m.err != "" {
@@ -405,10 +548,10 @@ func (m *editFormModel) View() string {
 
 	// Show different help based on number of hosts
 	if len(m.hostInputs) > 1 {
-		b.WriteString(m.styles.FormHelp.Render("Tab/↑↓/Enter: navigate • Ctrl+A: add host • Ctrl+D: delete host"))
+		b.WriteString(m.styles.FormHelp.Render("Tab/↑↓/Enter: navigate • Ctrl+J/K: switch tabs • Ctrl+A: add host • Ctrl+D: delete host"))
 		b.WriteString("\n")
 	} else {
-		b.WriteString(m.styles.FormHelp.Render("Tab/↑↓/Enter: navigate • Ctrl+A: add host"))
+		b.WriteString(m.styles.FormHelp.Render("Tab/↑↓/Enter: navigate • Ctrl+J/K: switch tabs • Ctrl+A: add host"))
 		b.WriteString("\n")
 	}
 	b.WriteString(m.styles.FormHelp.Render("Ctrl+S: save • Ctrl+C/Esc: cancel • * Required fields"))
@@ -416,6 +559,103 @@ func (m *editFormModel) View() string {
 	return b.String()
 }
 
+// renderEditTabs renders the tab headers for properties
+func (m *editFormModel) renderEditTabs() string {
+	var generalTab, advancedTab string
+
+	if m.currentTab == 0 {
+		generalTab = m.styles.FocusedLabel.Render("[ General ]")
+		advancedTab = m.styles.FormField.Render("  Advanced  ")
+	} else {
+		generalTab = m.styles.FormField.Render("  General  ")
+		advancedTab = m.styles.FocusedLabel.Render("[ Advanced ]")
+	}
+
+	return generalTab + "  " + advancedTab
+}
+
+// renderEditGeneralTab renders the general tab content for properties
+func (m *editFormModel) renderEditGeneralTab() string {
+	var b strings.Builder
+
+	fields := []struct {
+		index int
+		label string
+	}{
+		{0, "Hostname/IP *"},
+		{1, "User"},
+		{2, "Port"},
+		{3, "Identity File"},
+		{4, "Proxy Jump"},
+		{5, "Proxy Command"},
+		{7, "Tags (comma-separated)"},
+	}
+
+	for _, field := range fields {
+		fieldStyle := m.styles.FormField
+		if m.focusArea == focusAreaProperties && m.focused == field.index {
+			fieldStyle = m.styles.FocusedLabel
+		}
+		b.WriteString(fieldStyle.Render(field.label))
+		b.WriteString("\n")
+		b.WriteString(m.inputs[field.index].View())
+		b.WriteString("\n\n")
+	}
+
+	return b.String()
+}
+
+// renderEditAdvancedTab renders the advanced tab content for properties
+func (m *editFormModel) renderEditAdvancedTab() string {
+	var b strings.Builder
+
+	fields := []struct {
+		index int
+		label string
+	}{
+		{6, "SSH Options"},
+		{8, "Remote Command"},
+		{9, "Request TTY"},
+	}
+
+	for _, field := range fields {
+		fieldStyle := m.styles.FormField
+		if m.focusArea == focusAreaProperties && m.focused == field.index {
+			fieldStyle = m.styles.FocusedLabel
+		}
+		b.WriteString(fieldStyle.Render(field.label))
+		b.WriteString("\n")
+		b.WriteString(m.inputs[field.index].View())
+		b.WriteString("\n\n")
+	}
+
+	return b.String()
+}
+
+// Standalone wrapper for edit form
+type standaloneEditForm struct {
+	*editFormModel
+}
+
+func (m standaloneEditForm) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case editFormSubmitMsg:
+		if msg.err != nil {
+			m.editFormModel.err = msg.err.Error()
+			return m, nil
+		} else {
+			// Success: quit the program
+			return m, tea.Quit
+		}
+	case editFormCancelMsg:
+		return m, tea.Quit
+	}
+
+	newForm, cmd := m.editFormModel.Update(msg)
+	m.editFormModel = newForm.(*editFormModel)
+	return m, cmd
+}
+
 // RunEditForm runs the edit form as a standalone program
 func RunEditForm(hostName string, configFile string) error {
 	styles := NewStyles(80) // Default width
@@ -424,17 +664,10 @@ func RunEditForm(hostName string, configFile string) error {
 		return err
 	}
 
-	p := tea.NewProgram(editForm, tea.WithAltScreen())
+	m := standaloneEditForm{editForm}
+	p := tea.NewProgram(m, tea.WithAltScreen())
 	_, err = p.Run()
-	if err != nil {
-		return err
-	}
-
-	if editForm.err != "" {
-		return fmt.Errorf(editForm.err)
-	}
-
-	return nil
+	return err
 }
 
 func (m *editFormModel) submitEditForm() tea.Cmd {
@@ -453,12 +686,15 @@ func (m *editFormModel) submitEditForm() tea.Cmd {
 		}
 
 		// Get property values using direct indices
-		hostname := strings.TrimSpace(m.inputs[0].Value())  // hostnameInput
-		user := strings.TrimSpace(m.inputs[1].Value())      // userInput
-		port := strings.TrimSpace(m.inputs[2].Value())      // portInput
-		identity := strings.TrimSpace(m.inputs[3].Value())  // identityInput
-		proxyJump := strings.TrimSpace(m.inputs[4].Value()) // proxyJumpInput
-		options := strings.TrimSpace(m.inputs[5].Value())   // optionsInput
+		hostname := strings.TrimSpace(m.inputs[0].Value())                                   // hostnameInput
+		user := strings.TrimSpace(m.inputs[1].Value())                                       // userInput
+		port := strings.TrimSpace(m.inputs[2].Value())                                       // portInput
+		identity := strings.TrimSpace(m.inputs[3].Value())                                   // identityInput
+		proxyJump := strings.TrimSpace(m.inputs[4].Value())                                  // proxyJumpInput
+		proxyCommand := strings.TrimSpace(m.inputs[5].Value())                               // proxyCommandInput
+		options := config.ParseSSHOptionsFromCommand(strings.TrimSpace(m.inputs[6].Value())) // optionsInput
+		remoteCommand := strings.TrimSpace(m.inputs[8].Value())                              // remoteCommandInput
+		requestTTY := strings.TrimSpace(m.inputs[9].Value())                                 // requestTTYInput
 
 		// Set defaults
 		if port == "" {
@@ -478,7 +714,7 @@ func (m *editFormModel) submitEditForm() tea.Cmd {
 		}
 
 		// Parse tags
-		tagsStr := strings.TrimSpace(m.inputs[6].Value()) // tagsInput
+		tagsStr := strings.TrimSpace(m.inputs[7].Value()) // tagsInput
 		var tags []string
 		if tagsStr != "" {
 			for _, tag := range strings.Split(tagsStr, ",") {
@@ -491,13 +727,16 @@ func (m *editFormModel) submitEditForm() tea.Cmd {
 
 		// Create the common host configuration
 		commonHost := config.SSHHost{
-			Hostname:  hostname,
-			User:      user,
-			Port:      port,
-			Identity:  identity,
-			ProxyJump: proxyJump,
-			Options:   options,
-			Tags:      tags,
+			Hostname:      hostname,
+			User:          user,
+			Port:          port,
+			Identity:      identity,
+			ProxyJump:     proxyJump,
+			ProxyCommand:  proxyCommand,
+			Options:       options,
+			RemoteCommand: remoteCommand,
+			RequestTTY:    requestTTY,
+			Tags:          tags,
 		}
 
 		var err error

internal/ui/info_form.go

@@ -97,6 +97,7 @@ func (m *infoFormModel) View() string {
 		{"Port", formatOptionalValue(m.host.Port)},
 		{"Identity File", formatOptionalValue(m.host.Identity)},
 		{"ProxyJump", formatOptionalValue(m.host.ProxyJump)},
+		{"ProxyCommand", formatOptionalValue(m.host.ProxyCommand)},
 		{"SSH Options", formatSSHOptions(m.host.Options)},
 		{"Tags", formatTags(m.host.Tags)},
 	}

internal/ui/model.go

@@ -74,14 +74,14 @@ type Model struct {
 	filteredHosts  []config.SSHHost
 	searchMode     bool
 	deleteMode     bool
-	deleteHost     string
+	deleteHost     *config.SSHHost // Host to be deleted (with line number for precise targeting)
 	historyManager *history.HistoryManager
 	pingManager    *connectivity.PingManager
 	sortMode       SortMode
 	configFile     string // Path to the SSH config file
 
 	// Application configuration
-	appConfig      *config.AppConfig
+	appConfig *config.AppConfig
 
 	// Version update information
 	updateInfo     *version.UpdateInfo

internal/ui/styles.go

@@ -33,7 +33,8 @@ type Styles struct {
 	HelpText lipgloss.Style
 
 	// Error and confirmation styles
-	Error lipgloss.Style
+	Error     lipgloss.Style
+	ErrorText lipgloss.Style
 
 	// Form styles (for add/edit forms)
 	FormTitle     lipgloss.Style
@@ -97,6 +98,11 @@ func NewStyles(width int) Styles {
 			BorderForeground(lipgloss.Color(ErrorColor)).
 			Padding(1, 2),
 
+		// Error text style (no border, just red text)
+		ErrorText: lipgloss.NewStyle().
+			Foreground(lipgloss.Color(ErrorColor)).
+			Bold(true),
+
 		// Form styles
 		FormTitle: lipgloss.NewStyle().
 			Foreground(lipgloss.Color("#FFFDF5")).

internal/ui/tui.go

@@ -16,7 +16,7 @@ import (
 )
 
 // NewModel creates a new TUI model with the given SSH hosts
-func NewModel(hosts []config.SSHHost, configFile, currentVersion string) Model {
+func NewModel(hosts []config.SSHHost, configFile string, searchMode bool, currentVersion string, noUpdateCheck bool) Model {
 	// Load application configuration
 	appConfig, err := config.LoadAppConfig()
 	if err != nil {
@@ -26,6 +26,12 @@ func NewModel(hosts []config.SSHHost, configFile, currentVersion string) Model {
 		appConfig = &defaultConfig
 	}
 
+	// CLI flag overrides config file setting
+	if noUpdateCheck {
+		f := false
+		appConfig.CheckForUpdates = &f
+	}
+
 	// Initialize the history manager
 	historyManager, err := history.NewHistoryManager()
 	if err != nil {
@@ -38,7 +44,7 @@ func NewModel(hosts []config.SSHHost, configFile, currentVersion string) Model {
 	styles := NewStyles(80) // Default width
 
 	// Initialize ping manager with 5 second timeout
-	pingManager := connectivity.NewPingManager(5 * time.Second)
+	pingManager := connectivity.NewPingManager(5*time.Second, configFile)
 
 	// Create the model with default sorting by name
 	m := Model{
@@ -54,6 +60,7 @@ func NewModel(hosts []config.SSHHost, configFile, currentVersion string) Model {
 		height:         24,
 		ready:          false,
 		viewMode:       ViewList,
+		searchMode:     searchMode,
 	}
 
 	// Sort hosts according to the default sort mode
@@ -64,6 +71,9 @@ func NewModel(hosts []config.SSHHost, configFile, currentVersion string) Model {
 	ti.Placeholder = "Search hosts or tags..."
 	ti.CharLimit = 50
 	ti.Width = 25
+	if searchMode {
+		ti.Focus()
+	}
 
 	// Use dynamic column width calculation (will fallback to static if width not available)
 	nameWidth, hostnameWidth, tagsWidth, lastLoginWidth := m.calculateDynamicColumnWidths(sortedHosts)
@@ -147,8 +157,8 @@ func NewModel(hosts []config.SSHHost, configFile, currentVersion string) Model {
 }
 
 // RunInteractiveMode starts the interactive TUI interface
-func RunInteractiveMode(hosts []config.SSHHost, configFile, currentVersion string) error {
-	m := NewModel(hosts, configFile, currentVersion)
+func RunInteractiveMode(hosts []config.SSHHost, configFile string, searchMode bool, currentVersion string, noUpdateCheck bool) error {
+	m := NewModel(hosts, configFile, searchMode, currentVersion, noUpdateCheck)
 
 	// Start the application in alt screen mode for clean output
 	p := tea.NewProgram(m, tea.WithAltScreen())

internal/ui/update.go

@@ -74,8 +74,8 @@ func (m Model) Init() tea.Cmd {
 	// Basic initialization commands
 	cmds = append(cmds, textinput.Blink)
 
-	// Check for version updates if we have a current version
-	if m.currentVersion != "" {
+	// Check for version updates if we have a current version and updates are enabled
+	if m.currentVersion != "" && m.appConfig.IsUpdateCheckEnabled() {
 		cmds = append(cmds, checkVersionCmd(m.currentVersion))
 	}
 
@@ -452,7 +452,7 @@ func (m Model) handleListViewKeys(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		if m.deleteMode {
 			// Exit delete mode
 			m.deleteMode = false
-			m.deleteHost = ""
+			m.deleteHost = nil
 			m.table.Focus()
 			return m, nil
 		}
@@ -508,15 +508,13 @@ func (m Model) handleListViewKeys(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		} else if m.deleteMode {
 			// Confirm deletion
 			var err error
-			if m.configFile != "" {
-				err = config.DeleteSSHHostFromFile(m.deleteHost, m.configFile)
-			} else {
-				err = config.DeleteSSHHost(m.deleteHost)
+			if m.deleteHost != nil {
+				err = config.DeleteSSHHostWithLine(*m.deleteHost)
 			}
 			if err != nil {
 				// Could display an error message here
 				m.deleteMode = false
-				m.deleteHost = ""
+				m.deleteHost = nil
 				m.table.Focus()
 				return m, nil
 			}
@@ -533,7 +531,7 @@ func (m Model) handleListViewKeys(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 			if parseErr != nil {
 				// Could display an error message here
 				m.deleteMode = false
-				m.deleteHost = ""
+				m.deleteHost = nil
 				m.table.Focus()
 				return m, nil
 			}
@@ -548,7 +546,7 @@ func (m Model) handleListViewKeys(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 
 			m.updateTableRows()
 			m.deleteMode = false
-			m.deleteHost = ""
+			m.deleteHost = nil
 			m.table.Focus()
 			return m, nil
 		} else {
@@ -673,11 +671,13 @@ func (m Model) handleListViewKeys(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	case "d":
 		if !m.searchMode && !m.deleteMode {
 			// Delete the selected host
-			selected := m.table.SelectedRow()
-			if len(selected) > 0 {
-				hostName := extractHostNameFromTableRow(selected[0]) // Extract hostname from first column
+			cursor := m.table.Cursor()
+			if cursor >= 0 && cursor < len(m.filteredHosts) {
+				// Get the host at the cursor position (which corresponds to filteredHosts index)
+				targetHost := &m.filteredHosts[cursor]
+
 				m.deleteMode = true
-				m.deleteHost = hostName
+				m.deleteHost = targetHost
 				m.table.Blur()
 				return m, nil
 			}

internal/ui/view.go

@@ -144,7 +144,11 @@ func (m Model) renderListView() string {
 func (m Model) renderDeleteConfirmation() string {
 	// Remove emojis (uncertain width depending on terminal) to stabilize the frame
 	title := "DELETE SSH HOST"
-	question := fmt.Sprintf("Are you sure you want to delete host '%s'?", m.deleteHost)
+	hostName := ""
+	if m.deleteHost != nil {
+		hostName = m.deleteHost.Name
+	}
+	question := fmt.Sprintf("Are you sure you want to delete host '%s'?", hostName)
 	action := "This action cannot be undone."
 	help := "Enter: confirm • Esc: cancel"
 

internal/validation/ssh.go

@@ -11,6 +11,7 @@ import (
 )
 
 // ValidateHostname checks if a hostname is valid
+// Accepts regular hostnames, IP addresses, and SSH tokens like %h, %p, %r, %u, %n, %C, %d, %i, %k, %L, %l, %T
 func ValidateHostname(hostname string) bool {
 	if len(hostname) == 0 || len(hostname) > 253 {
 		return false
@@ -22,7 +23,18 @@ func ValidateHostname(hostname string) bool {
 		return false
 	}
 
-	hostnameRegex := regexp.MustCompile(`^[a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?)*$`)
+	// Check if hostname contains SSH tokens (e.g., %h, %p, %r, %u, %n, etc.)
+	// SSH tokens are documented in ssh_config(5) man page
+	sshTokenRegex := regexp.MustCompile(`%[hprunCdiklLT]`)
+	if sshTokenRegex.MatchString(hostname) {
+		// If it contains SSH tokens, it's a valid SSH config construct
+		return true
+	}
+
+	// RFC 1123: each label must start with alphanumeric, end with alphanumeric,
+	// and contain only alphanumeric and hyphens. Labels are 1-63 chars.
+	// A hostname is one or more labels separated by dots.
+	hostnameRegex := regexp.MustCompile(`^[a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]|[a-zA-Z0-9]{0,62})?(\.[a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]|[a-zA-Z0-9]{0,62})?)*$`)
 	return hostnameRegex.MatchString(hostname)
 }
 
@@ -54,6 +66,25 @@ func ValidateIdentityFile(path string) bool {
 	if path == "" {
 		return true // Optional field
 	}
+	// SSH tokens (e.g. %d, %h, %r, %u) are resolved by SSH at connection time
+	sshTokenRegex := regexp.MustCompile(`%[hprunCdiklLT]`)
+	if sshTokenRegex.MatchString(path) {
+		return true
+	}
+	// Expand environment variables ($VAR and ${VAR}); track undefined ones
+	hasUndefined := false
+	path = os.Expand(path, func(key string) string {
+		val, ok := os.LookupEnv(key)
+		if !ok {
+			hasUndefined = true
+			return "$" + key
+		}
+		return val
+	})
+	// If any variable was undefined, accept the path (SSH will report the error)
+	if hasUndefined {
+		return true
+	}
 	// Expand ~ to home directory
 	if strings.HasPrefix(path, "~/") {
 		homeDir, err := os.UserHomeDir()

internal/validation/ssh_test.go

@@ -24,6 +24,19 @@ func TestValidateHostname(t *testing.T) {
 		{"hostname ending with dot", "example.com.", false},
 		{"hostname with hyphen", "my-server.com", true},
 		{"hostname starting with number", "1example.com", true},
+		{"multiple hyphens and subdomains", "my-host-name-01.cwd.pub.domain.net", true},
+		{"multiple hyphens", "my-host-name-01", true},
+		{"complex hostname with hyphens", "server-01-prod.data-center.example.com", true},
+		{"hostname with consecutive hyphens", "my--server.com", true},
+		{"single char labels", "a.b.c.d.com", true},
+		// SSH tokens support (issue #32 comment)
+		{"SSH token %h", "%h.server.com", true},
+		{"SSH token %p", "server.com:%p", true},
+		{"SSH token %r", "%r@server.com", true},
+		{"SSH token %u", "%u.example.com", true},
+		{"SSH token %n", "%n.domain.net", true},
+		{"SSH token %C", "host-%C.com", true},
+		{"multiple SSH tokens", "%h.%u.server.com", true},
 	}
 
 	for _, tt := range tests {
@@ -120,6 +133,9 @@ func TestValidateIdentityFile(t *testing.T) {
 		t.Fatal(err)
 	}
 
+	// Set up an env var pointing to the valid file's directory for env var tests
+	t.Setenv("TEST_SSHM_DIR", tmpDir)
+
 	tests := []struct {
 		name string
 		path string
@@ -130,6 +146,13 @@ func TestValidateIdentityFile(t *testing.T) {
 		{"non-existent file", "/path/to/nonexistent", false},
 		// Skip tilde path test in CI environments where ~/.ssh/id_rsa may not exist
 		// {"tilde path", "~/.ssh/id_rsa", true}, // Will pass if file exists
+		// Environment variable expansion (issue #33)
+		{"env var $VAR/key defined", "$TEST_SSHM_DIR/test_key", true},
+		{"env var ${VAR}/key defined", "${TEST_SSHM_DIR}/test_key", true},
+		{"env var undefined", "$UNDEFINED_SSHM_VAR_XYZ/key", true},
+		// SSH tokens
+		{"SSH token %d", "%d/.ssh/id_rsa", true},
+		{"SSH token %h", "%h-key", true},
 	}
 
 	for _, tt := range tests {
@@ -157,6 +180,7 @@ func TestValidateHost(t *testing.T) {
 	if err := os.WriteFile(validIdentity, []byte("test"), 0600); err != nil {
 		t.Fatal(err)
 	}
+	t.Setenv("TEST_SSHM_HOST_DIR", tmpDir)
 
 	tests := []struct {
 		name     string
@@ -174,6 +198,9 @@ func TestValidateHost(t *testing.T) {
 		{"invalid hostname", "myserver", "invalid..hostname", "22", "", true},
 		{"invalid port", "myserver", "example.com", "99999", "", true},
 		{"invalid identity", "myserver", "example.com", "22", "/nonexistent", true},
+		// Environment variables and SSH tokens in identity (issue #33)
+		{"identity with env var", "myserver", "example.com", "22", "$TEST_SSHM_HOST_DIR/test_key", false},
+		{"identity with SSH token", "myserver", "example.com", "22", "%d/.ssh/id_rsa", false},
 	}
 
 	for _, tt := range tests {