I have tmux installed with iTerm2 on OS X.

While I can do Cmd+left/right to switch between tabs, I cannot seem to be able to switch between panes under the same tab using Ctl+b o (that is, Control and b together, followed by an o?) as suggested by others.

I don't think I've touched any default key binding for tmux, so what is the correct keyboard shortcut for this operation?

2 Answers 2


Cmd + Opt + Up or Down or Left or Right works for me.


You can see a list of all your bindings using Ctl+b ?. You're looking for the following line:

bind-key          o select-pane -t :.+

although it sounds as if you may have a key other than 'o' bound to it.

  • Ctl+b doesn't invoke tmux commands in iterm2, at least not mine.
    – Sigfried
    Commented Mar 2, 2022 at 10:03
  • Control-b is the default prefix in tmux, unless you change it in your configuration. I don't know exactly how iTerm 2's tmux integration works, having never really felt better than just using tmux directly.
    – chepner
    Commented Mar 2, 2022 at 14:17

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