Как проверить, есть ли вы в Tmux Bash

if [[ "$TERM" =~ "screen".* ]]; then
  echo "We are in TMUX!"
else
  echo "We are not in TMUX :/  Let's get in!"
  # Launches tmux in a session called 'base'.
  tmux attach -t base || tmux new -s base
fi
Gifted Gorilla