Resize tmux Window Panes On A Mac

June - 2021


Uses these key sequences to resize tmux window panes on a mac:

CTRL+b :resize-p -D 4
CTRL+b :resize-p -U 4
CTRL+b :resize-p -L 4
CTRL+b :resize-p -R 4


The CTRL+b ARROW (aka <C-b> + ARROW) calls don't work on my mac. There are system command that take over and prevent them from working. To resize window panes, I use the tmux command line

  • First hit CTRL+b
  • Then hit : to move to the command line
  • Use resize-p to change the window pane size with the direction and the amount. For example:
      :resize-p -D 4

The -D stands for down and the "4" is the amount. The other directions are -U for up, -L for left, and -R for right.