System message

Auto Start Tomcat when reboot Linux PC

1. Download and install Apache Tomcat and run following command from terminal
   
2. cp $TOMCAT/bin/catalina.sh /etc/init.d/
3. cd /etc/init.d/
4. mv catalina.sh catalina
5. vi catalina to add/change the lines shown below
6. chkconfig --add catalina
7. chkconfig --level 2345 catalina on
8. reboot PC and check if tomcat start automatically

• Add the following lines in catalina file right after the comment lines on the top of file
  # chkconfig: - 90 15
  # description: Jakarta Tomcat Java Servlets and JSP server
  
  export CATALINA_HOME=
  export JAVA_HOME=
  export PATH=$JAVA_HOME/bin:$PATH
  
  
  status() {
  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
  echo -n "Tomcat ( pid "
  ps ax --width=1000 | grep "[o]rg.apache.catalina.startup.Bootstrap start" | awk '{printf $1 " "}'
  echo -n ") is running..."
  echo
  else
  echo "Tomcat is stopped."
  fi
  }
  
• find line # ----- Execute The Requested Command -----------------------------------------
  if [ "$1" != "status" ]; then
  echo "Using CATALINA_BASE: $CATALINA_BASE"
  echo "Using CATALINA_HOME: $CATALINA_HOME"
  echo "Using CATALINA_TMPDIR: $CATALINA_TMPDIR"
  if [ "$1" = "debug" -o "$1" = "javac" ] ; then
  echo "Using JAVA_HOME: $JAVA_HOME"
  else
  echo "Using JRE_HOME: $JRE_HOME"
  fi
  fi
  
• find and add following lines
  elif [ "$1" = "version" ] ; then
  "$_RUNJAVA" \
  -classpath "$CATALINA_HOME/server/lib/catalina.jar" \
  org.apache.catalina.util.ServerInfo
  elif [ "$1" = "status" ];then
  status
  elif [ "$1" = "restart" ];then
  $0 stop
  $0 start
  else