screen -D

Does not start screen, but detaches the elsewhere running screen session

Subcommands

Name	Description
`-r`	Reattach a session. If necessary detach and logout remotely first
`-R`	Attach here and now. In detail this means: If a session is running, then reattach. If necessary detach and logout remotely first
`-RR`	Attach here and now. Whatever that means, just do it