tmux ls will list the sessions that you have running within the tmux server if
tmux is currently running. This is handy to combine with commands such as attach.
tmux ls
https://waylonwalker.com/tmux-attach/
https://waylonwalker.com/tmux-nav-2021/
for more information on how I navigate tmux, check out this full post
Also check out the full YouTube tmux-playlist to see all of the videos in this series.