asterisk users - Aug 2007 - What is this?

Hi List;

I saw this is written in that link:

http://www.voip-info.org/wiki/view/Asterisk+options

And really I was not able to understand for what is
that and where I can learn about it and how to write
such thing? Can some one advise me?


!/bin/bash 

asterisk Startup script for the asterisk PBX Server 

chkconfig: - 87 15 
description: Asterisk is a PBX server. 
processname: asterisk 
config: /etc/asterisk/ 
pidfile: /var/run/asterisk.pid 


Source function library. 
. /etc/rc.d/init.d/functions 

asterisk=/usr/sbin/asterisk 
prog=Asterisk 
pidfile=/var/run/asterisk.pid 
lockfile=/var/lock/subsys/asterisk 
RETVAL=0 

start() { 
       echo -n $"Starting $prog: " 
       daemon $asterisk $OPTIONS 
       RETVAL=$? 
       echo 
        $RETVAL = 0  && touch ${lockfile} 
       return $RETVAL 
} 
stop() { 
       echo -n $"Stopping $prog: " 
       killproc $asterisk 
       RETVAL=$? 
       echo 
        $RETVAL = 0  && rm -f ${lockfile} ${pidfile} 
} 
reload() { 
       echo -n $"Reloading $prog config files " 
       $asterisk -rx reload 
       RETVAL=$? 
       echo 
} 


See how we were called. 
case "$1" in 
 start) 
       start 
       ;; 
 stop) 
       stop 
       ;; 
 restart) 
       stop 
       start 
       ;; 
 reload) 
       reload 
       ;; 
 *) 
       echo $"Usage: $prog
{start|stop|restart|reload}" 
       exit 1 
esac 

exit $RETVAL 

Regards,
Bilal Ghayad


       
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