sample-etc_rc.d_init.d_ddclient

#!/bin/bash
#
# ddclient      This shell script takes care of starting and stopping
#               ddclient.
#
# chkconfig: 2345 65 35
# description: ddclient provides support for updating dynamic DNS services.

CONF=/etc/ddclient/ddclient.conf
program=ddclient

[ -f $CONF ] || exit 0

system=unknown
if [ -f /etc/fedora-release ]; then
    system=fedora
elif [ -f /etc/redhat-release ]; then
    system=redhat
elif [ -f /etc/debian_version ]; then
    system=debian
fi

PID=''
if [ "$system" = "fedora" ] || [ "$system" = "redhat" ]; then
    . /etc/init.d/functions
    PID=`pidofproc $program`
else
    PID=`ps -aef | grep "$program - sleep" | grep -v grep | awk '{print $2}'`
fi

PATH=/usr/sbin:/usr/local/sbin:${PATH}
export PATH

# See how we were called.
case "$1" in
  start)
	# Start daemon.
    DELAY=`grep -v '^\s*#' $CONF | grep -i -m 1 "daemon" | awk -F '=' '{print $2}'`
    if [ -z "$DELAY" ] ; then
        DELAY="-daemon 300"
    else
        DELAY=''
    fi
	echo -n "Starting ddclient: "
    if [ "$system" = "fedora" ] || [ "$system" = "redhat" ]; then
        daemon $program $DELAY
    else
	    ddclient $DELAY
    fi
	echo    
	;;
  stop)
	# Stop daemon.
	echo -n "Shutting down ddclient: "
    if [ -n "$PID" ] ; then
        if [ "$system" = "fedora" ] || [ "$system" = "redhat" ]; then
            killproc $program
        else
	        kill $PID
        fi
    else
        echo "ddclient is not running"
    fi
	echo
	;;
  restart)
	$0 stop
	$0 start
	;;
  status)
    if [ "$system" = "fedora" ] || [ "$system" = "redhat" ]; then
        status $program
    else
	    if test "$PID"
	    then
		    for p in $PID
		    do
			    echo "$program (pid $p) is running"
		    done
	    else
		    echo "$program is stopped"
        fi
	fi
	;;
  *)
	echo "Usage: ddclient {start|stop|restart|status}"
	exit 1
esac

exit 0