liunx 新建自启服务

1. 　　创建服务基本概念:https://www.cnblogs.com/mafeng/p/10316351.html
2. 　　tomcat启动脚本:https://blog.csdn.net/zxnlmj/article/details/22933477

#!/bin/bash
# This is the init script for starting up the
#  Jakarta Tomcat server
#
# chkconfig: 345 91 10
# description: Starts and stops the Tomcat daemon.
#
 
# Source function library.
. /etc/rc.d/init.d/functions
 
# Get config.
. /etc/sysconfig/network
 
# Check that networking is up.
[ "${NETWORKING}" = "no" ] && exit 0
 
export JAVA_HOME=/usr/jdk/jdk1.8.0_131
tomcat_home=/usr/tomcat/apache-tomcat-9.0.34
startup=$tomcat_home/bin/startup.sh
shutdown=$tomcat_home/bin/shutdown.sh
 
start(){
   echo -n "Starting Tomcat service:"
   cd $tomcat_home
   $startup
   echo "tomcat is succeessfully started up"
}
 
stop(){
   echo -n "Shutting down tomcat: "
   cd $tomcat_home
   $shutdown
   echo "tomcat is succeessfully shut down."
}
 
status(){
    numproc=`ps -ef | grep catalina | grep -v "grep catalina" | wc -l`
    if [ $numproc -gt 0 ]; then
       echo "Tomcat is running..."
    else
       echo "Tomcat is stopped..."
    fi
}
 
restart(){
   stop
   start
}
 
# See how we were called.
case "$1" in
start)
   start
   ;;
stop)
   stop
   ;;
status)
   status
   ;;
restart)
   restart
   ;;
*)
   echo $"Usage: $0 {start|stop|status|restart}"
   exit 1
esac

　　　创建服务:https://blog.csdn.net/weixin_33747129/article/details/91700921

           3.注意事项:

• • sh文件头部必须以#!bin/sh或者#!bin/bash开头
  • 服务运行的脚本文件 需要自行在头部增加环境变量