uv run {baseDir}/scripts/tmux-manager.py (--all | -s SESSION [...] | --session-group GROUP [...] [--window-group GROUP [...]] | --window-group GROUP [...]) [--kill | --restart] [--dry-run] [--list] [--config FILE]
uv run {baseDir}/scripts/tmux-manager.py --send-keys -s SESSION[:WINDOW] COMMAND
uv run {baseDir}/scripts/tmux-manager.py --tail -s SESSION[:WINDOW]
uv run {baseDir}/scripts/tmux-manager.py --validate [--config FILE]
uv run {baseDir}/scripts/tmux-manager.py --list-groups [--config FILE]

Flags

Selectors

Flag	Meaning
`--all`	Target every session in the config
`--session-group GROUP`	Target sessions by `session_group` (repeatable, comma-separated) — all windows created
`--window-group GROUP`	Filter to only matching windows (repeatable, comma-separated) — can be combined with `--session-group`
`-s SESSION`	Target a specific session by name (repeatable)

--all and -s are mutually exclusive with everything else. --session-group and --window-group can be used together to scope both sessions and windows.

Actions — default is create

Flag	Meaning
(no action flag)	Create targeted sessions; skip ones already running
`--kill`	Kill targeted sessions
`--restart`	Kill then recreate targeted sessions
`--list`	Show status table (running/stopped) — no changes made
`--dry-run`	Preview what would happen — no changes made

Output / Inspection

Flag	Meaning
`--tail -s SESSION[:WINDOW]`	Stream live pane output (Ctrl+C to stop)

Send Commands

Flag	Meaning
`--send-keys -s SESSION[:WINDOW] "cmd"`	Send a shell command to a running session or specific window

Config & Validation

Flag	Meaning
`--config FILE`	Use an alternative config file
`--validate`	Check config for errors and warnings (no selector needed)
`--list-groups`	List all session groups and window groups (no selector needed)

Examples

uv run {baseDir}/scripts/tmux-manager.py --all                              # create all sessions
uv run {baseDir}/scripts/tmux-manager.py --all --kill                       # kill all sessions in config
uv run {baseDir}/scripts/tmux-manager.py --all --restart                    # restart all sessions
uv run {baseDir}/scripts/tmux-manager.py --all --dry-run                    # preview what would be created
uv run {baseDir}/scripts/tmux-manager.py --all --list                       # list status of all sessions
uv run {baseDir}/scripts/tmux-manager.py --session-group work                     # create sessions in session-group 'work'
uv run {baseDir}/scripts/tmux-manager.py --session-group work --restart           # restart sessions in session-group 'work'
uv run {baseDir}/scripts/tmux-manager.py --session-group work --list              # list status of sessions in session-group 'work'
uv run {baseDir}/scripts/tmux-manager.py --kill --session-group work              # kill all sessions in session-group 'work'
uv run {baseDir}/scripts/tmux-manager.py --window-group dev                       # create sessions, only 'dev' windows
uv run {baseDir}/scripts/tmux-manager.py --window-group dev --restart             # restart with only 'dev' windows
uv run {baseDir}/scripts/tmux-manager.py --window-group claude,gemini             # multiple groups, comma-separated
uv run {baseDir}/scripts/tmux-manager.py --window-group claude --window-group gemini  # equivalent
uv run {baseDir}/scripts/tmux-manager.py --session-group TargetTracer,N8N --window-group claude,gemini  # combined
uv run {baseDir}/scripts/tmux-manager.py -s my-session                            # create only my-session
uv run {baseDir}/scripts/tmux-manager.py --kill -s my-session                     # kill only my-session
uv run {baseDir}/scripts/tmux-manager.py --restart -s my-session                  # restart only my-session
uv run {baseDir}/scripts/tmux-manager.py --send-keys -s my-session "cmd"               # send to active window
uv run {baseDir}/scripts/tmux-manager.py --send-keys -s my-session:claude "cmd"        # send to specific window
uv run {baseDir}/scripts/tmux-manager.py --tail -s my-session                     # stream live pane output
uv run {baseDir}/scripts/tmux-manager.py --validate                               # validate config file
uv run {baseDir}/scripts/tmux-manager.py --list-groups                            # list all groups
uv run {baseDir}/scripts/tmux-manager.py --all --config ~/my-sessions.yaml        # use a specific config

Behaviour Notes

Idempotent creates — sessions already running are skipped. Use --restart to force recreate.
--kill requires a selector — use --all --kill to kill everything managed by this config.
--tail / --send-keys accept only a single -s SESSION[:WINDOW] target.
SESSION[:WINDOW] — append :windowname to target a specific window, e.g. my-session:claude. Without it, the active window is used.
--validate does not require a selector — warns on unknown fields, catching typos like window_grou or sesion_group.
--list-groups does not require a selector — reads config only.
pre_hook / post_hook run on the host shell, not inside tmux.
pre_hook_fail: abort — stops session creation if the pre_hook exits non-zero. Default is warn (prints warning, continues).
--window-group — sessions already running are skipped unless --restart is used. On restart, only the matching windows are created.
--session-group + --window-group combined — narrows to the specified sessions first, then opens only the matching windows within them.
Sessions without a session_group are only reachable via --all or -s.

Native tmux equivalents

These operations don't need a wrapper — use tmux directly:

Operation	Native command
Kill all tmux sessions	`tmux kill-server`
Snapshot pane output	`tmux capture-pane -p -t SESSION[:WINDOW]`

Sample Config (`tmux-sessions.yaml.sample`)

sessions:

  # ── Project session (no env vars) ─────────────────────────────────────────
  - name: Project_1
    session_group: Project_1
    working_dir: ~/Projects/Project_1
    # focus: claude             # which window to select after creation (optional)
    windows:
      - name: claude
        window_group: claude    # targeted by: --window-group claude
        command: "claude --dangerously-skip-permissions --continue"
      - name: gemini
        window_group: gemini    # targeted by: --window-group gemini
        command: "gemini -y --resume"
      - name: shell             # no window_group — only opened via --session-group or --all
        # no command = opens a plain shell

  # ── Project session (with env vars) ───────────────────────────────────────
  - name: Project_2
    session_group: Project_2
    working_dir: ~/Projects/Project_2
    env:
      NODE_ENV: development
      PORT: 3000
    windows:
      #- name: server           # uncomment to add a dev server window
      #  command: "npm run dev"
      - name: claude
        window_group: claude
        command: "claude --dangerously-skip-permissions --continue"
      - name: gemini
        window_group: gemini
        command: "gemini -y --resume"
      - name: shell
        window_group: shell
        # no command = opens a plain shell

  # ── Single-window utility session ─────────────────────────────────────────
  - name: monitoring
    session_group: system
    working_dir: ~
    command: "htop"

Full Config Reference

Field	Level	Description
`name`	session	Required. Must be unique.
`session_group`	session	Optional. String or list. Used with `--session-group` — targets the whole session. A session can belong to multiple groups.
`working_dir`	session / window	Starting directory. Window value overrides session.
`focus`	session	Window name to select after creation.
`pre_hook`	session	Shell command run before session is created.
`pre_hook_fail`	session	`warn` (default) or `abort` — whether a failed pre_hook stops session creation.
`post_hook`	session	Shell command run after session is created.
`env`	session / window	Map of env vars. Window env sent as `export` statements.
`command`	session / window	Program to run. On session level, creates a single-window session.
`windows`	session	List of windows. Overrides session-level `command`.
`window_group`	window	Optional. String or list. Used with `--window-group` — only matching windows are created. A window can belong to multiple groups.
`panes`	window	List of panes to split the window into. Each can have `command` and `working_dir`.
`layout`	window	Pane layout: `tiled`, `even-horizontal`, `even-vertical`, `main-horizontal`, `main-vertical`.

tmux-manager

tmux-manager

Usage