Shell實現判斷進程是否存在並從新啓動腳本

簡潔版：

#! /bin/bash # author caoxin # time 2012-10-10 # program : 判斷進行是否存在，並從新啓動 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 

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詳細版：

#!/bin/bash # #調用關閉jboss進程腳本 stopMethodServer.sh #打印出當前的jboss進程：grep jboss查詢的jboss進程，grep -v "grep" 去掉grep進程 jmsThread=`ps -ef | grep gdms | grep jboss | grep -v "grep"` echo $jmsThread #查詢jboss進程個數：wc -l 返回行數 count=`ps -ef | grep gdms | grep jboss | grep -v "grep" | wc -l` echo $count sec=7 #開始一個循環，以判斷進程是否關閉 for var in 1 2 do if [ $count -gt 0 ]; then #若進程還未關閉，則腳本sleep幾秒 echo sleep $sec second the $var time, the JMS thread is still alive sleep $sec else #若進程已經關閉，則跳出循環 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 #調用啓動腳本 nohup startMethodServer.sh &