If you want your tmux was keep on auto start, this snippet is your solution.

tmux-snippet.md

How it works

Validate if tmux exists and send the buffer to an empty stream /dev/null -> which tmux 2>&1 >/dev/null If session hack exists it recover it -> tmux attach -t hack Otherwise, It create a new session call hack -> tmux new -s hack

if which tmux 2>&1 >/dev/null; then
  if [ $TERM != "screen-256color" ] && [  $TERM != "screen" ]; then
    tmux attach -t hack || tmux new -s hack; exit
  fi
fi