tmux/Q/How can I refresh .zshrc in all of my open panes and windows in tmux?

• How can I refresh .zshrc in all of my open panes and windows in tmux?

  • My Notes

    • I don't yet have an answer to this that satisfies me. The answer below is a nod to an approach, not a workable solution.

  • Answer

    • AI/Response
      • Use tmux send-keys to broadcast a source ~/.zshrc command to every pane across all sessions:
      • bash

        tmux list-panes -a -F '#{pane_id}' | xargs -I{} tmux send-keys -t {} 'source ~/.zshrc' Enter

        • -a lists panes across all sessions and windows, not just the current one
        • -F '#{pane_id}' outputs each pane's unique ID (e.g. %0, %1)
        • send-keys -t {} targets each pane and types + executes the command
      • Alternatively, using a shell loop for more visibility:
      • bash

        for pane in $(tmux list-panes -a -F '#S:#I.#P'); do
          tmux send-keys -t "$pane" 'source ~/.zshrc' Enter
        done

      • Caveats
        • This sends keystrokes into whatever is currently running in each pane — if a pane has a long-running process active, the keystrokes will be buffered or misinterpreted
        • Panes running something other than a shell prompt (e.g. vim, python) will receive the literal text source ~/.zshrc — interrupt/exit those first if needed
        • New panes opened after running this will automatically source the updated .zshrc since they start fresh shells
      • tmux send-keys docs