screen -x

Share your terminal session (remotely or whatever)

Force the user you want to watch doing things into doing his things in a screen session. Then simply attach yourself to that session with the command shown above. Works only if you are on the same machine, of course

5
By: flart
2009-09-09 11:30:56

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    -1
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  • script -f /tmp/foo will place all output of the terminal, including carriage returns, to a file. This file can be tail dash-eff'ed by one or more other terminals to display the information of the main terminal. Good way to share one's screen on short notice. Note: This produces a very accurate output, but that includes depending on the size of your terminal to be the same. You can clear screens or even resize the terminal for others using this function; I use it in conjunction with the "mid" command in my list. Show Sample Output


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  • With this you can unlock your KDE4 session via SSH, via mobile phone SSH or e. g. scheduled task in crontab (without asking password). Useful when you need to grant somebody access to your locked profile remotely. Create an alias (e. g. as "unlock") and use with remote KDE4 lock. This works only on KDE4 boxes because KDE 3 is using utility with another name. Tested on Kubuntu 8.10.


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    b2e · 2009-05-21 22:29:06 1

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    script -t 2> timing.txt -a session.txt ; Run some commands here; exit; scriptreplay timing.txt session.txt
    sandeepvreddy · 2012-12-12 10:32:28 0
  • If you enable multiuser, then you can permit others to share your screen session. The following conditions apply: 1. screen must be suid root; 2. "multiuser on" must be configured in ~/.screenrc; 3. control the others user(s) access with "aclchg": # ----- from ~/.screenrc-users ----- aclchg someuser +rx "#?" #enable r/o access to "someuser" aclchg someuser -x "#,at,aclchg,acladd,acldel,quit" # don't allow these aclchg otheruser +rwx "#?" # enable r/w access to "otheruser" aclchg otheruser -x "#,at,aclchg,acladd,acldel,quit" # don't allow them to use these commands # ----- After doing this (once), you start your session with: $ screen Then, the other user can join your terminal session(s) with youruserid: $ screen -r youruserid/ Note: the trailing "/" is required. Multiple users can share the same screen simultaneously, each with independent access controlled precisely with "aclchg" in the ~/.screenrc file. I use the following setup: # ~/.screenrc-base # default screenrc on any host source $HOME/.screenrc-base source $HOME/.screenrc-$HOST source $HOME/.screenrc-users # ----- Then, the base configurations are in ~/.screenrc-base; the host-specific configurations are in ~/.screenrc-$HOST, and the user configurations are in ~/.screenrc-users. The host-specific .screenrc file might contain some host-specific screen commands; e.g.: # ~/.screen-myhost # ----- screen -t 'anywhere' /bin/tcsh screen -t 'anywhere1' /bin/tcsh # ---- The .screenrc-base contains: # ~/.screenrc-base ## I find typing ^a (Control-a) awkward. So I set the escape key to CTRL-j instead of a. escape ^Jj termcapinfo xterm* ti@:te@: autodetach on zombie kr verbose on multiuser on


    39
    % screen -r someuser/
    totoro · 2009-03-25 23:59:38 1
  • Do the unlock KDE screen saver locked session with lightdm display manager used in Kubuntu 12.10 +


    1
    qdbus | grep kscreenlocker_greet | xargs -I {} qdbus {} /MainApplication quit
    Murz · 2013-07-11 10:50:03 0

What Others Think

That only connects to existing screen processes in the current session. Not remotely, you need telnet or ssh access to the user account for that,
Escher · 454 weeks and 1 day ago
i DID write that into the description, which mystically got lost during posting the command. Added it again
flart · 454 weeks and 1 day ago
things needed for this to work: (1) they tell me the screen binary must be setuid, (2) multiuser mode must be enabled via the -x option or 'multiuser on' command inside screen, and (3) users must be added via 'acladd username' command. At least that does it on debian/ubuntu systems.
bwoodacre · 454 weeks and 1 day ago
For Windows: I have written Windows Desktop Workspace manager with automated terminal for CYGWIN. Each terminal window has built-in TELNET or TELNET-TLS server that allows to share terminal session with remote users via TELNET protocol. Check it out. http://sergeybelous.com/terminal-session-sharing/ Shared session is persistent and can be accessed from anywhere by TELNET or TELNET-TLS client.
sergey123 · 271 weeks ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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