Server Fault is a question and answer site for system and network administrators. It only takes a minute to sign up.
Sign up to join this community
I'd love to be able to write a script that checked for the presence of a tmux session and attach it, or if no session exists, start a new one. So that I could create a custom command in my .zshrc file, and not have to always check.
Is there a way to check programmatically that I have a tmux screen session running?
There is an answer over on StackOverflow https://stackoverflow.com/questions/3432536/tmux-create-session-if-none-exists
tmux attach || tmux new
tmux ls will list running sessions
If you're using this inside a .shrc file or similar with exec I'd recommend
if tmux ls
exec tmux attach
else
exec tmux
fi
