How to Auto-Log Every tmux Pane Using a Custom Shell Script

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A developer has shared a method to automatically log all tmux pane activity from the moment each pane is created, addressing a limitation of the existing tmux-logging plugin, which only supports manual toggling. The solution combines the tmux-logging plugin with a custom shell script that uses awk with per-line flushing to ensure logs are written in real time rather than buffered. Three tmux hooks cover every way a new pane can be created — new session, new window, or split window — so no pane is missed. Configuration is managed through the standard .tmux.conf file, and users can also toggle logging manually for any pane using a key binding. The setup was written and tested on macOS with tmux 3.7c, BSD awk, and zsh.

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