Would `screen -d -R` & al not work? From `man screen`: -d|-D [pid.tty.host] does not start screen, but detaches the elsewhere running screen

Would `screen -d -R` & al not work? From `man screen`: -d|-D [pid.tty.host] does not start screen, but detaches the elsewhere running screen session. It has the same effect as typing "C-a d" from screen's controlling terminal. -D is the equivalent to the power detach key. If no session can be detached, this option is ignored. In combination with the -r/-R option more powerful effects can be achieved: -d -r Reattach a session and if necessary detach it first. -d -R Reattach a session and if necessary detach or even create it first. -d -RR Reattach a session and if necessary detach or create it. Use the first session if more than one session is available. -D -r Reattach a session. If necessary detach and logout remotely first. -D -R Attach here and now. In detail this means: If a session is running, then reattach. If necessary detach and logout remotely first. If it was not running create it and notify the user. This is the author's favorite. -D -RR Attach here and now. Whatever that means, just do it. Note: It is always a good idea to check the status of your sessions by means of "screen -list".