Shell实现判断进程是否存在并重新启动脚本

「爱情、让人受尽委屈。」 2022-09-25 15:14 213阅读 0赞

## 简洁版： ##

#! /bin/bash
        # author caoxin
        # time 2012-10-10 
        # program : 判断进行是否存在，并重新启动
    
    
        function check(){
          count=`ps -ef |grep $1 |grep -v "grep" |wc -l`
          #echo $count
          if [ 0 == $count ];then
            nohup python /runscript/working/$1 &
          fi
        }
    
        check behaviors.py

## 详细版： ##

#!/bin/bash
        #
    
        #调用关闭jboss进程脚本
        stopMethodServer.sh
    
        #打印出当前的jboss进程：grep jboss查询的jboss进程，grep -v "grep" 去掉grep进程
        jmsThread=`ps -ef | grep gdms | grep jboss | grep -v "grep"`
        echo $jmsThread
    
        #查询jboss进程个数：wc -l 返回行数
        count=`ps -ef | grep gdms | grep jboss | grep -v "grep" | wc -l`
        echo $count
    
        sec=7
        #开始一个循环，以判断进程是否关闭
    
        for var in 1 2
        do
         if [ $count -gt 0 ]; then
          #若进程还未关闭，则脚本sleep几秒
          echo sleep $sec second the $var time, the JMS thread is still alive
          sleep $sec
         else
          #若进程已经关闭，则跳出循环
          echo "break"
          break
         fi
        done
    
        #if [ $count -eq 0 ]; then
        # echo "nohup startMethodServer.sh &"
        # nohup startMethodServer.sh &
        #else
        # echo "It's better to check the thread!!!"
        #fi
    
        #调用启动脚本
        nohup startMethodServer.sh &