tmux is a terminal multiplexer: it enables a number of terminals to be created, accessed, and controlled from a single screen. tmux may be detached from a screen and continue running in the background, then later reattached.
Installation --------$ sudo apt-get install tmux
List available sessions --------$ tmux ls
Start new session --------$ tmux new -s <session_name>
Attach to session --------$ tmux a -t <session_name>
Kill session --------$ tmux kill-session -t <session_name>