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Top Forums Shell Programming and Scripting Help scripting to start, check, and restart processes Post 302532979 by neutronscott on Thursday 23rd of June 2011 09:50:18 AM
Old 06-23-2011
Quote:
Originally Posted by MacG32
Thank you very much neutronscott for your help, this has worked like a charm. Looks like I was way off. Thanks again. Smilie
There's just many different ways it can be solved. Instead of keeping a PID file (my original trial) I just ask screen if the session is running. It makes it so elegant, eh? Smilie

Thanks for the Thanks! Smilie

---------- Post updated 06-23-11 at 09:50 AM ---------- Previous update was 06-22-11 at 02:13 PM ----------

Oh man, I couldn't sleep last night because I was thinking I didn't test all cases. So first thing today I run 'chkscreen' while attached to 'server1' session and I was right. bug Smilie

Sorry. Using '-r' checks if there is a session you can attach to, which is false if you're already attached.

So change

Code:
# does the session exist?
screen -r $SESSION -ls -q 2>&1 >/dev/null

to read

Code:
# does the session exist?
screen -S $SESSION -ls -q 2>&1 >/dev/null

And it shouldn't start extra servers when you're viewing the screen anymore. Sorry.
This User Gave Thanks to neutronscott For This Post:
 

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GNOME-SESSION-SAVE(1)					      General Commands Manual					     GNOME-SESSION-SAVE(1)

NAME
gnome-session-save - Saves or ends the current GNOME session SYNOPSIS
gnome-session-save [--logout] [--force-logout] [--logout-dialog] [--shutdown-dialog] [--gui] [--kill [--silent]] DESCRIPTION
gnome-session-save can be used from a GNOME session to save a snapshot of the currently running applications. This session will be later restored at your next GNOME session. The --gui option will report errors in dialog boxes instead of printing to stderr. If called with the --logout option, the current GNOME session will be ended, unless logging out has been inhibited by an application. The --force-logout option can be used to end the session regardless of the inhibition state. When the --logout-dialog option is given, the standard dialog displaying logout options is displayed. When --shutdown-dialog option is given, the standard dialog displaying shutdown options is displayed. The --kill and --silent options are deprecated. The --kill option is equivalent to the --logout-dialog option. If --silent is used with --kill, then it will behave as if --logout was used. The session is not saved when gnome-session-save is called with any of the options ending the session. SEE ALSO
gnome-session(1) BUGS
If you find bugs in the gnome-session-save program, please report these on http://bugzilla.gnome.org. GNOME GNOME-SESSION-SAVE(1)
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