大侠们帮我解释下这个.sh文件中的命令__exename_grep_pid_echo_Enserver_

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大侠们帮我解释下这个.sh文件中的命令

来源: 互联网发布时间：2017-01-23

本文导语: 本帖最后由 f504501983 于 2011-12-09 11:47:12 编辑 #!/bin/bash #cd /home/sis/EnvDataCenterCollection exename=Enserver.jar pid=`ps ax|grep ${exename}|grep -v grep|awk '{print $1}'` if [[ $pid ]] then echo 'find pid is '$pid kill -9 $pid echo "killed $pid o...

本帖最后由 f504501983 于 2011-12-09 11:47:12 编辑

#!/bin/bash

#cd /home/sis/EnvDataCenterCollection
exename=Enserver.jar
pid=`ps ax|grep ${exename}|grep -v grep|awk '{print $1}'`
if [[ $pid ]]
then
echo 'find pid is '$pid
kill -9 $pid
echo "killed $pid over"
else
echo "There is no process running....."
fi
echo "start new process...."
nohup java -jar ${exename}>>./nohup.out 2>&1 &
ps -ef |grep '${exename}'|grep -v grep
echo 'restart successfully'
没怎么接触过linux命令。请大侠们帮我解释解释。

#!/bin/bash
#cd /home/sis/EnvDataCenterCollection
exename=Enserver.jar          变量，把Enserver.jar赋值给exename
pid=`ps ax|grep ${exename}|grep -v grep|awk '{print $1}'`  得到包含Enserver.jar的进程的pid
if [[ $pid ]]
then
echo 'find pid is '$pid
kill -9 $pid          存在包含Enserver.jar的进程的pid就把这个进程杀死
echo "killed $pid over"
else
echo "There is no process running....."
fi
echo "start new process...."
nohup java -jar ${exename}>>./nohup.out 2>&1 &            开始新的进程，后台运行，
ps -ef |grep '${exename}'|grep -v grep                进程是否存活，即查看新进程是否开启
echo 'restart successfully'

上面那段shell就是用于重启Enserver.jar这个应用的