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I want to share a screen session, but this is harder then it seems for me. What I did was yum install screen then I made a session with root screen -S test. After that i made it multiuser Ctrl+A :multiuser on. I started a new SSH connection logged in as Foo and did screen -ls. All I get is there is no socket at /var/run/screen/S-foo/.

I also export the SCREENDIR to /var/run/screen/ so it is only one DIR where the sessions are saved in. But the system don't allow for other user to own it.

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Since your user doesn't actually own the session it won't show up when using screen -ls.

You need to use

:acladd <username>

and then to attach

screen -r root/test

more info

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