I'm using PuTTY to ssh into a Debian machine. When I try to use Ctrl + [arrow key] to resize panes in tmux, the active pane just switches as if I was not holding Ctrl. Other Ctrl key shortcuts work fine. When I try the same thing using a different terminal, the shortcut works.
PuTTY – Ctrl + Arrow Keys for Tmux Not Working
puttysshtmux
Best Answer
Add the following line to
~/.tmux.conf
Source: https://stuff.mit.edu/afs/athena/project/bsd/src/tmux-1.3/FAQ