To create a screen
screen
List all the detached (running) screens with their screen IDs.
screen -list
Connect / Attach to a specific running screen.
screen -x [screen id]
While in a screen to Terminate / Stop a screen from running.
Ctrl + D
While in a screen to detach from screen without disturbing it.
Ctrl + A, Then press D
Detach or terminate all screens.
killall screen