Shell实现判断进程是否存在并重新启动脚本分享

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 &