I have installed Tomcat 7 on Ubuntu 12.04 LTS which run on an Amzon EC2 instance. Now I wish tomcat should restart automatically on system reboot. I read this blog which suggest adding below script to /etc/init.d/tomcat7

# Tomcat auto-start
#
# description: Auto-starts tomcat
# processname: tomcat
# pidfile: /var/run/tomcat.pid

case $1 in
start)
sh /usr/share/tomcat7/bin/startup.sh
;;
stop) 
sh /usr/share/tomcat7/bin/shutdown.sh
;;
restart)
sh /usr/share/tomcat7/bin/shutdown.sh
sh /usr/share/tomcat7/bin/startup.sh
;;
esac 
exit 0

and issue the following commands

sudo chmod 755 /etc/init.d/tomcat7

sudo ln -s /etc/init.d/tomcat7 /etc/rc1.d/K99tomcat

sudo ln -s /etc/init.d/tomcat7 /etc/rc2.d/S99tomcat

sudo /etc/init.d/tomcat7 restart

My Questions

1. The tomcat7 already has script in it, where do we have to paste the suggested script?
2. Is the suggested procedure correct?