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 &
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