GNU Screen - create screen in background run command from shell or script

If you want to launch and connect to screen:

screen CMD

If you want to launch and not connect to screen:

screen -dm CMD

Works with sessions too:

screen -Sdm NewDetachedSessionName CMD

You can send keypresses to CMD with stuff:

screen -S NewDetachedSessionName -X stuff "keypresses"

To send a new-line, include \n or ^M or $'\n' with the keypresses.

bash shell gnu-screen

first create new session :

screen -dmS [session_name]

then attach command or script to run in session created :

screen -x [session_name] [script.sh]

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