Note: This site is currently "Under construction". I'm migrating to a new version of my site building software. Lots of things are in a state of disrepair as a result (for example, footnote links aren't working). It's all part of the process of building in public. Most things should still be readable though.

Resize A tmux Window Split Pane On A Mac

The Easy Way: With The Mouse

Add this to your `~/.tmux.conf`` file to let tmux work with the mouse:

Code

setw -g mouse on

Start a new session, make a new split with either `LEADER-%`` or `LEADER-"`` then drag when divider to resize the panes.

Note

I didn't think this worked at first because the mouse icon didn't change when I hovered over the divider line in iTerm2. The click and drag still worked as expected.

TL;DR With Commands

CTRL-b
ESC-arrow_key

Details

Hit the leader key (which defaults to CTRLb) then hold the OPTION key and press the ARROW of the direction to push the window

Notes

  • If you're on a mac make sure to use the CTRL key and not Command

  • At one point I was setup to use ESC instead of CTRL based of some setting in iTerm2, but that's no longer the case. Not sure what changed. I think it had something to do with a remapping I did for Emacs maybe,

References