Shell实现判断进程是否存在并重新启动脚本

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 &