start a tmux session in the current directory

tpwd

#!/usr/bin/env bash
# start a tmux session in the current directory

dirname="$(basename $PWD)"

# tmux sessionname cannot contain a dot, replace with underscore
session="${dirname/./_}"

tmux_sessions=$(tmux ls -F '#{session_name}')

if [ -n "$TMUX" ]; then
  # already in tmux
  if [[ $tmux_sessions != *"$session"* ]]; then
      # force create session, don't attach
      TMUX='' tmux new-session -Ad -s "$session"
  fi
  tmux switch-client -t "$session"
else
  # not in tmux 
  # create session, or attach when exists
  tmux new-session -As "$session"
fi