Tmux

To toggle back and forth between two Tmux sessions, use <leader>-L.

You’ve been iterating on your Tmux configuration file, and now you want to your configs in action without closing the program. But how? Here’s the command to source an updated tmux.conf: $ tmux source-file tmux.conf

Last week we encountered a breaking change in our Tmux configuration, and briefly lost the ability to scroll with the mouse. It became an opportunity to re-learn Tmux’s copy mode, and liberate ourselves from the mouse a little more. Enter copy mode with <prefix> [. From here, you can navigate with standard Vim commands. ctrl-u moves you a half-page up, perfect for wading through test failure backtraces.