The screen command allows you to start a session on a remote computer and have it persist even if you log out. This is very useful if you’re running a long program so that you don’t have to stay logged in for that full duration.
To attach to an existing screen, do:
This will return you to an existing session.
While you’re attached to a screen, all screen commands begin with:
To detach a session, type:
To list the existing screens and whether you are attached to one, run: