tmux-run

name	tmux-run
description	Run a shell command in a specified tmux pane and return the pane's output. Use when user asks to run something in a tmux pane, send a command to tmux, or check tmux pane output.

tmux-run

Run a shell command in a tmux pane and capture the immediate output.

Usage

$HOME/.claude/skills/tmux-run/tmux-run.sh <pane> <command...>

• pane: tmux target pane (e.g. 0:0.1, main:0.0, %3). If not specified by the user, ask.
• command: the shell command to run

The script wraps the command with sentinels, sends it via tmux send-keys, waits 0.1s, then captures the pane to extract new output and the exit code.

Output

• If the command finishes within 0.1s: shows output + --- exited: N ---
• If still running: shows partial output + --- still running ---

Notes

• If the pane is in an interactive program (vim, less, python REPL), warn the user before sending keys — commands can get swallowed.
• For long-running commands, tell the user it was sent and offer to check back later with tmux capture-pane -t PANE -p -S -200.