linux下tomcat自启动

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#!/bin/bash
#
# Startup script for the tomcat
#
# chkconfig: 345 95 15
# description: tomcat service script
#
# Source function library.
. /etc/rc.d/init.d/functions
TOMCAT_HOME=/home/tomcat
RETVAL=0
checkjava(){
if [ -z "$JAVA_HOME" ]; then
export JAVA_HOME=/home/jdk1.6.0_07
fi
}
start(){
checkjava
checkrun
   if [ $RETVAL -eq 0 ]; then
echo "Starting tomcat"
#关键就在切换用户着，没有下面这句就无法正常启动
su - root -c "$TOMCAT_HOME/bin/startup.sh" 
touch /var/lock/subsys/tomcat
else
echo "tomcat allready running"
fi
}
stop(){
checkjava
checkrun
if [ $RETVAL -eq 1 ]; then
echo "Shutting down tomcat"
su - root-c "$TOMCAT_HOME/bin/shutdown.sh"
#while [ $RETVAL -eq 1 ]; do
# sleep 5
# checkrun
#done
rm -f /var/lock/subsys/tomcat
else
echo "tomcat not running"
fi
checkrun
}
checkrun(){
ps ax --width=1000 | grep "[o]rg.apache.catalina.startup.Bootstrap start" | awk '{printf $1 " "}' | wc | awk '{print $2}' >/tmp/tomcat_process_count.txt
read line < /tmp/tomcat_process_count.txt
if [ $line -gt 0 ]; then
RETVAL=1
return $RETVAL
else
RETVAL=0
return $RETVAL
fi
}
status(){
checkrun
if [ $RETVAL -eq 1 ]; then
echo -n "Tomcat ( pid "
ps ax --width=1000 | grep "org.apache.catalina.startup.Bootstrap start" | awk '{printf $1 " "}'
echo -n ") is running..."
echo
else
echo "Tomcat is stopped"
fi
echo "---------------------------------------------"
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
status
# su - root -c "$TOMCAT_HOME/bin/catalina.sh version"
;;
*)
echo "Usage: $0 {start|stop|restart|status}"
esac
exit 0