This is an overview of basic interactions of tmux sessions using the command-line.

Start an unnamed session:

tmux

kill-session

Kill current session:

tmux kill-session

new-session

Start a session named foo:

tmux new -s foo

rename-session

Rename current session to bar:

tmux rename bar

detach-session

Detech current session:

tmux detach

list-sessions

List all sessions:

tmux ls

The first column is the session name. Unnamed sessions follow zero-based numbering.

attach-session

Attach session bar:

tmux attach -t bar

See tmux cheat sheet for more tips and tricks.