Automatically open tmux when ssh'ing into a server if the LC_TMUX variable has been set by the ssh client, e.g., ssh -o SendEnv=LC_TMUX user@server. If a session does not exist then a new one is created. Otherwise, the last session is attached. This should always be run last either in .bashrc or as a script in .bashrc.d. The user is logged out f…

99-tmux-ssh.sh

# This script should be the last one run in .bashrc.d.  Run if
# the LC_TMUX variable has been set by the ssh client, e.g.,
# ssh -o SendEnv=LC_TMUX user@server.
if [[ -z "$TMUX" ]] && [[ -n "$LC_TMUX" ]]; then
    tmux has-session &> /dev/null
    if [ $? -eq 1 ]; then
      exec tmux new
      exit
    else
      exec tmux attach
      exit
    fi
fi