tmux is a program that provides a convenient way for getting multiple terminal sessions into one window. If you are using it a lot, quickly you can find yourself asking for more - multilevel tmux. Example of nested tmux session:
There are 2 settings necessary for this setup to work as expected. Inside
~/.tmux.conf you need:
bind-key -n c-g send-prefix bind-key -n c-t send-keys c-g
for prefix key access to nested windows. The default prefix is ctrl+b, so here I'm setting
ctrl+g to work as prefix on the second level of tmux, and
ctrl+t to work on the third level.
Thanks to configuration like this, if you use
c to create a new window on the first level of tmux, you will use:
c- to create window on the second level
c- to create window on the first
The other setting is inside your
If we skip this, we will end up seeing:
$ tmux new -s test sessions should be nested with care, unset $TMUX to force
In this short guide, we have seen how to set up our tmux to support nesting with minimal configuration & nice mapping for prefix key. Let me know in the comments if you are interested.