inid.d script for CentOS

Selenium Grid init.d script for CentOS 5.5

#!/bin/bash
# /etc/init.d/selenium-grid
# centos-compatible selenium-grid startup script.
# Eugene Zakharchenko <z.evgeniy[at]gmail.com>
### BEGIN INIT INFO
# Provides:          selenium-grid
# Required-Start:    $remote_fs $syslog $network
# Required-Stop:     $remote_fs $syslog $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start selenium at boot time
# Description:       Controls selenium grid.
### END INIT INFO

# Source function library.
. /etc/init.d/functions
# Place for pid file
SELENIUM_PID=/var/run/selenium-grid.pid
# Create selenium user before or change it
SELENIUM_USER=selenium
# Log dile
SELENIUM_LOG_FILE=/var/log/selenium/selenium.log
# Java interpreter
JAVA_CMD=/usr/bin/java
# Version of Selenium grid you're using
SELENIUM_GRID_VERSION=1.0.8
# Selenium Grid home directory
SELENIUM_GRID_HOME=/usr/local/selenium-grid
# Class path for SG
SELENIUM_GRID_HOME_CLASSPATH="$SELENIUM_GRID_HOME:$SELENIUM_GRID_HOME/lib/selenium-grid-hub-standalone-$SELENIUM_GRID_VERSION.jar"
# Options for running SG
PARAMS="-classpath $SELENIUM_GRID_HOME_CLASSPATH com.thoughtworks.selenium.grid.hub.HubServer"

case "$1" in
	start)
		echo -n "Starting Selenium Grid ..."
		# ensure that we have a dir for the logs
		if [ ! -f $SELENIUM_LOG_FILE ]; then 
			mkdir $(dirname $SELENIUM_LOG_FILE) > /dev/null 2>$1
			chown $SELENIUM_USER:$SELENIUM_USER $(dirname $SELENIUM_LOG_FILE) > /dev/null 2>$1
		fi
		# retrieving pid of the paretn process
		/bin/su -l "$SELENIUM_USER" --shel=/bin/bash -c "$JAVA_CMD $PARAMS 2> $SELENIUM_LOG_FILE &"
		echo $(ps hww -u "$SELENIUM_USER" -o pid,cmd | grep -v bash | cut -d ' ' -f 1) > "$SELENIUM_PID"
		if [ $? == "0" ]; then
			success	
		else
			failure
		fi
		echo 
		echo "Log file: $SELENIUM_LOG_FILE" 
		;;
	status)
		status -p "$SELENIUM_PID" selenium 
		;;
	stop)
		echo -n "Killing Selenium Grid ..."
		killproc -p "$SELENIUM_PID" selenium
		echo
		;;
	restart)
		$0 stop
		$0 start
		;;
	*)
		echo "Usage: $0 {start|stop|status|restart}"
		exit 1
esac