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Start Daemonised GNU Screen from script a allow calling script to end

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http://serverfault.com – I have a script on an embedded device that calls screen to start if a user logs in via a ssh session... #!/bin/sh SCREENRUNNING=`pgrep SCREEN` if [ -z "$SCREENRUNNING" ]; then echo "Screen not running so let's start the Master session sleep 2 screen -dmS Master sleep 2 screen -x root/Master else echo "Screen is already running let's connect to existing session" sleep 2 screen -x root/Master fi However this keeps the calling script active till the screen session exits,even if it's detached. What I want to do is have the calling script finish a (HowTos)

dayu's picture
Submitted by dayu on 09/24/2012

Stories similar to Start Daemonised GNU Screen from script a allow calling script to end

I would like to send a command to a screen session and if possible get the output.

My attempt at sending a command to a screen session is as I found on this website and lots of others, but it doesn't seem to work:

root@server [~]# screen -X "script -a -c 'ls -l' /tmp/command.log" && cat /tmp/command.log cat: /tmp/command.log: No such file or directory root@server [~]#

Note there is on

This is driving me nuts. I run an opensim server on system, and currently have a watchdog script used to check that the server is running and either run it or re-start it as necessary (in the event of a server crash).The server itself is run in a gnu screen session so that I can log in to the server remotely via ssh. At the moment I run my watchdog at login, which is not ideal.

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Screen seems like a perfect way to ensure the process isn't interrupted.

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Im making a shell script which will open a already running screen session, I want it to output something in this screen session using shell.

All help is appreciated

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