Recording tmux session

If you want to record your fancy tmux session with all windows and splits recorded you can do it in the following way:

• setup your tmux session (tmux new [-s session-name], create windows, splits, start processes in them)
• detach (prefix+d)
• run asciinema rec --command "tmux attach [-t session-name]" tmux-$(date +%F--%H%M).cast
• when you're finished, just detach the session again