Screen commands
Ctrl-a c Create new window (shell)
Ctrl-a k Kill the current window
Ctrl-a w List all windows (the current window is marked with "*")
Ctrl-a 0-9 Go to a window numbered 0-9
Ctrl-a n Go to the next window
Ctrl-a Ctrl-a Toggle between the current and previous window
Ctrl-a [ Start copy mode
Ctrl-a ] Paste copied text
Ctrl-a ? Help (display a list of commands)
Ctrl-a Ctrl- Quit screen
Ctrl-a D Power detach and logout
Ctrl-a d Detach but keep shell window open
Use screen -ls to see the available screen sessions.
Use screen -r to reattach to the sessions. or screen -rd to reattach if the server got confused due to a network outage. https://unix.stackexchange.com/questions/240444/cant-resume-screen-says-i-am-already-attached