Screen
Screen is a console application that allows you to use multiple terminal sessions within one window. The program operates within a shell session and acts as a container and manager for other terminal sessions, similar to how a window manager manages windows.
Installation
sudo apt-get update sudo apt-get install screen
Commands
screen - Start a new screen session
Ctrl-a ? - Information about Key Bindings
Ctrl-a c - Directly create a new screen when inside one screen and also enter it
screen -ls List all the running screens
screen -XS [session # you want to quit] quit - Kil / Stop the screen
screen -r [session # you want to attach to] - Attach to a particular screen
(ctrl + a) (ctrl + d) OR screen -dr - Detach from screen