First, create a new session:
screen -d -m -S multisession
Attach to it:
screen -r multisession
Turn on multiuser support:
Press Ctrl+a and type
:multiuser on
:acladd USER #use username of user you want to give access to your screen
Now, Ctrl+a+d and list the sessions:
screen -ls
You are going to get a message like:
There is a screen on:
4791.multisession (Multi, detached)
You now have a multiuser screen session. Give the name multisession to acl'd user, so he can attach to it:
screen -x youruser/multisession
And that's it.
The only drawback is that screen must run as suid root. But as far as I know is the default, normal situation. Another option is to do screen -S $screen_id -X multiuser on, screen -S $screen_id -X acladd authorized_user Hope this helps.