auto-tmux

First, a script to ensure tmux is running how we like it:

$ cat start-tmux
#!/bin/bash

if ! tmux has-session -t irssi >/dev/null 2>&1 ; then
        tmux -2 new-session -d -n irssi -s irssi irssi
fi

if ! tmux has-session -t irssi; then
        echo "Failed to start irssi tmux session"
fi

Run it at boot time:

$ crontab -l
@reboot ./start-tmux 2>&1 | logger -t start-tmux

Auto-launch into that tmux session for interactive sessions, via ~/.profile:

if [ ! "${TMUX:-}" ] ; then
        ./start-tmux
        tmux attach -t irssi
fi