#/bin/bash

while true;

do

count=`ps -ef | grep test.jar | grep -v grep|wc -l`

if [ ${count} -lt 1 ]; then

nohup java -jar xxx.jar >log.out 2>&1  &

else

echo “process is running”

fi

sleep 3

done

Linux Shell脚本：自动读取pid并关闭进程

查询进程信息

ps -ef|grep elasticsearch

过滤掉grep进程

ps -ef|grep elasticsearch|grep -v grep

提取pid(awk以空格分割，显示第二个变量即为pid)

ps -ef|grep elasticsearch|grep -v grep|awk ‘{print $2}’

根据pid kill掉该进程

完整脚本如下所示

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