Help with creating startup scripts using screen Post: 302717033

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Top Forums Shell Programming and Scripting Help with creating startup scripts using screen Post 302717033 by Pyitoechito on Wednesday 17th of October 2012 12:10:46 PM

10-17-2012

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The main reason for the screens is that the server needs to have programs that are always running. So the first screen runs the Minecraft server itself, the second screen runs the Team Speak server, and the third screen runs the SHOUTcast server.

The screens are so people logged into the linux shell can actually do things while the commands for running the server are still running. The original startup scripts (which are still there) start up minecraft and team speak on separate, unnamed screen sessions. It was a guessing game of which screen to attach to. So I set it up so that they all run on one screen manually. But if the linux server itself ever goes down and starts up again, it will go back to separate sessions due to the old startup scripts.

The reason I want to start a screen, then run the command is so that if, for example, the Minecraft server crashes. Then one needs simply to log into the linux server, attach to the screen session (screen -x, it should be the only session) and then end the crashed server and re-run the server start script. If the screen was started with the Minecraft start scripts passed in with it, then ending the Minecraft server would terminate the screen. Some of the people who manage the server are not really skilled with unix (I'm still learning, myself) so it might confuse them for the screen to terminate on them, and have to figure out how to create a new one.

The script I posted above was just a test to see if I could get those screens started and get commands running in them. But I only managed to create all 3 properly named screens with it.

Last edited by Pyitoechito; 10-17-2012 at 01:12 PM.. Reason: Added more info

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LEARN ABOUT BSD

dmxgetscreencount

DMXGetScreenCount(3)					     Library Functions Manual					      DMXGetScreenCount(3)

NAME

       DMXGetScreenCount - determine number of back-end screens

SYNOPSIS

       #include <X11/extensions/dmxext.h>

       Bool DMXGetScreenCount(Display *dpy,
			      int *screen_count);

DESCRIPTION

       DMXGetScreenCount()  returns  the  number  of back-end screens that a Xdmx(1) server controls.  Since a DMX screen usually fills all of the
       available area on a back-end server, there is usually a one-to-one correspondence between DMX screens and backend servers.  However, it	is
       also  possible  for a DMX screen to cover only part of the available area on a back-end server, and for more than one DMX screens to occupy
       different parts of the visible area on the same back-end server.

       A DMX screen may be managed as a regular X screen in the Xdmx(1) server or may be joined with other DMX screens using Xinerama.

RETURN VALUE

       DMXGetScreenCount() sets screen_count and returns True unless there is a protocol error.

NOTES

       If Xinerama is active, only one logical screen will be available to clients of the Xdmx(1) server.   However,  this  call  will	accurately
       reflect the number of composite back-end screens that the Xdmx(1) server is using.

SEE ALSO

       DMXGetScreenAttributes(3), DMXChangeScreensAttributes(3), DMX(3), Xdmx(1)

X Version 11							   libdmx 1.1.2 					      DMXGetScreenCount(3)