GNU screen has builtin multiuser support that let’s you share a screen session with another user.
First, create a screen session named with an arbitrary name, e.g. ‘shared’, and attach to it:
[user1@pc ~]$ screen -S shared
To allow other users to use the session, you need to enable multiuser support (Ctrl-a :multiuser on) and add the specific user(s) you want to share your session with to the access control list (Ctrl-a :acladd user2).
If you try to attach to this session with a different user now, you might run into the following problem:
[user2@pc ~]$ screen -x user1/shared Must run suid root for multiuser support.
To fix this, set the SUID bit on the screen binary:
[root@pc ~]# chmod u+s $(which screen) [root@pc ~]# chmod 755 /var/run/screen
You also need to change the permissions of the
/var/run/screen directory to
755, otherwise screen will complain when you create a new session.
You should be able to connect to the shared screen session now:
[user2@pc ~]$ screen -x user1/shared
If you run into
chmod /dev/pts/2: Operation not permitted remember that a user is not able to manipulate the pty he is on when you run
su - user (in contrast to using