Skills tmux

Remote-control tmux sessions for interactive CLIs by sending keystrokes and scraping pane output.

install
source · Clone the upstream repo
git clone https://github.com/openclaw/skills
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/openclaw/skills "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/brennerspear/tmux-controller" ~/.claude/skills/clawdbot-skills-tmux && rm -rf "$T"
manifest: skills/brennerspear/tmux-controller/SKILL.md
source content

tmux Skill

Use tmux only when you need an interactive TTY. Prefer exec background mode for long-running, non-interactive tasks.

Default Server — No Custom Sockets

Always use the default tmux server. Do NOT use

-S
custom sockets. The user needs to
tmux attach
easily without knowing obscure socket paths.

Session Naming

Convention:

oc-${project}-${feature}
(e.g.
oc-knowhere-date-range-picker
,
oc-deck-auth-flow
)

  • oc-
    prefix = OpenClaw-managed, avoids collision with user sessions
  • Easy to find:
    tmux ls | grep oc-

Quickstart

SESSION=oc-myproject-feature

tmux new-session -d -s "$SESSION" -c ~/projects/myproject
tmux send-keys -t "$SESSION" 'claude --dangerously-skip-permissions' Enter
tmux capture-pane -p -J -t "$SESSION" -S -200

After starting a session, tell the user:

To monitor: tmux attach -t $SESSION

Targeting panes and naming

  • Target format:
    session:window.pane
    (defaults to
    :0.0
    ).
  • Keep names short; avoid spaces.
  • Inspect:
    tmux list-sessions
    ,
    tmux list-panes -a
    .

Sending input safely

  • Prefer literal sends:
    tmux send-keys -t target -l -- "$cmd"
    .
  • Control keys:
    tmux send-keys -t target C-c
    .
  • For interactive TUI apps like Claude Code/Codex, do not append
    Enter
    in the same
    send-keys
    . These apps may treat a fast text+Enter sequence as paste/multi-line input and not submit. Send text and
    Enter
    as separate commands with a small delay:
tmux send-keys -t target -l -- "$cmd" && sleep 0.1 && tmux send-keys -t target Enter

Watching output

  • Capture recent history:
    tmux capture-pane -p -J -t target -S -200
    .
  • Attaching is OK; detach with
    Ctrl+b d
    .

Spawning processes

  • For python REPLs, set
    PYTHON_BASIC_REPL=1
    (non-basic REPL breaks send-keys flows).

Orchestrating Coding Agents (Codex, Claude Code)

tmux excels at running multiple coding agents in parallel:

# Create sessions in different worktrees
tmux new-session -d -s oc-project-fix1 -c ~/projects/project-fix1
tmux new-session -d -s oc-project-fix2 -c ~/projects/project-fix2

# Launch agents
tmux send-keys -t oc-project-fix1 'claude --dangerously-skip-permissions' Enter
tmux send-keys -t oc-project-fix2 'codex --full-auto' Enter

# Send a prompt (text + Enter separated by delay)
tmux send-keys -t oc-project-fix1 -l -- "Fix the date picker styling." && sleep 0.1 && tmux send-keys -t oc-project-fix1 Enter

# Poll for completion (check if shell prompt returned)
for sess in oc-project-fix1 oc-project-fix2; do
  if tmux capture-pane -p -t "$sess" -S -3 | grep -q "❯"; then
    echo "$sess: DONE"
  else
    echo "$sess: Running..."
  fi
done

# Get full output
tmux capture-pane -p -t oc-project-fix1 -S -500

Tips:

  • Use separate git worktrees for parallel fixes (no branch conflicts)
  • bun install
    /
    pnpm install
    first before running agents in fresh clones
  • Check for shell prompt (
    or
    $
    ) to detect completion
  • Codex needs
    --yolo
    or
    --full-auto
    for non-interactive fixes

Cleanup

  • Kill a session:
    tmux kill-session -t "$SESSION"
    .
  • Kill all OpenClaw sessions:
    tmux ls -F '#{session_name}' | grep '^oc-' | xargs -n1 tmux kill-session -t
    .