tussh 0.3.0

A fast, responsive Textual TUI for managing and launching SSH hosts from your OpenSSH config.

TuSSH

A fast, responsive Textual TUI for browsing and launching SSH hosts from your OpenSSH config.

• Left: searchable host list sorted by usage (most-used first)
• Right: full, merged effective options for the selected host
• Enter connects; a/e/d add/edit/delete; o options; Esc quits

Highlights

• Reads ~/.ssh/config (plus Include globs); applies OpenSSH “first match wins”
• Lists only explicit aliases (wildcards still affect merged options)
• Seamless connect flow: the app stays running, suspends the TUI while SSH/Mosh runs in your terminal, and resumes the UI after you disconnect
• Theme persistence: pick a theme via Ctrl-P palette; TuSSH saves and restores it
• Add/Edit/Delete host blocks (writes only to primary config)
• Options modal for global extra ssh args and a custom config path
• Choose client: SSH or Mosh (extra SSH args passed to mosh via --ssh)
• Filter quickly with / (type to filter, Esc to leave the filter)
• Usage-based sorting: hosts bubble up as you use them more

Install

poetry install
poetry run tussh

# or, after publishing
pip install tussh
tussh

Usage

Key bindings

• Enter: Connect to highlighted host (also works when pressing Enter in the list)
• /: Focus the filter input; type to filter; Esc to return to list
• a: Add a host
• e: Edit selected host
• d: Delete selected host (with confirmation)
• o: Open Options
• Esc or q: Quit (also closes an open modal)
• Ctrl-P: Open the palette (pick themes; your choice is saved)

UI overview

• Host list (left):

  • Sorted by usage (descending), then alphabetically (case-insensitive)
  • First host is selected on startup; the list has focus by default
  • Filter box sits above the list; it does not steal focus unless / is pressed

• Options panel (right):

  • Shows the merged, effective options for the selected host
  • Non-focusable to keep keyboard focus in the host list

Modals

• Options modal:

  • Client: choose SSH or Mosh
  • Extra SSH arguments: appended to every connection (e.g., -o ConnectTimeout=5)
  • SSH config path: override the default ~/.ssh/config
  • Esc cancels; Save persists to settings.json

• Add/Edit host modal:

  • Two-column form: label on the left, input on the right; scrollable content
  • Common fields: Alias, HostName, User, Port, IdentityFile, ProxyJump, ProxyCommand, forwards, keepalives, known hosts file, auth preferences, etc.
  • Booleans: Use OpenSSH-friendly values (yes/no). Examples are shown as placeholders.
  • “Additional options”: free-form lines that will be written verbatim inside the host block
  • Esc cancels; Save writes to your primary config when possible

Behavior and storage

• Primary SSH config: defaults to ~/.ssh/config (override in Options)
• Includes: all Include files are read for merging; writes happen only to the primary config
• Safety: if a host lives in an included file or shares a multi-alias block, tussh prevents editing and explains what to do
• Usage-based sorting: each successful connect increments a counter per alias

Where settings are stored

• Linux: ~/.config/tussh/settings.json
• macOS: ~/Library/Application Support/tussh/settings.json
• Windows: %APPDATA%\tussh\settings.json

Settings include extra_args, ssh_config_path, client, usage counts, and theme (the selected Textual theme name).

Connecting

• SSH: runs ssh <alias> [extra args]
• Mosh: runs mosh [--ssh="ssh <extra args>"] <alias>
• The TUI is suspended while the connection runs, so SSH/Mosh owns the TTY. The screen is cleared and a brief “Connecting to …” line is printed. When you disconnect, TuSSH resumes instantly without restarting. If suspend isn’t available in your Textual version, TuSSH falls back to the previous behavior and execs the client.

Troubleshooting

• Enter doesn’t connect:
  • Ensure the host list has focus (press Esc to leave the filter)
  • If it still doesn’t work, check your Textual version and report the issue
• ssh/mosh not found:
  • Install the client and ensure it’s on PATH
• Theme not persisting:
  • Open the palette with Ctrl-P, select a theme; the chosen theme name is saved to settings.json under theme and restored at startup
• Can’t edit/delete a host:
  • The host may live in an included file or a multi-alias block; the app will tell you what to change

Notes

• Writes are confined to the primary SSH config; includes are read-only
• Boolean options are not auto-converted; enter values exactly as you want them written (e.g., yes/no)
• The UI uses a separate stylesheet for layout and modal centering