[Tmux][1] is an open-source terminal multiplexer which allows multiple terminal sessions to be accessed simultaneously in a single window. Tmux allows you to switch easily between several programs in one terminal, detach them (they keep running in the background) and reattach them to a different terminal.
Tmux is installed on Karolina's login nodes.
Note that [GNU Screen][2] is not supported, but if you prefer it, you can install it in your `/home` folder:
