1.編寫test.sh指令碼，指令碼如下：

#!/bin/sh
export JAVA_HOME=/usr/java/jdk1.6.0_26

pid=`ps -auxww|grep tomcat|grep -v grep|awk '{print $2}'`

echo $pid

if [ -n "$pid" ];

then

{

echo "==========tomcat is start============"

'/usr/server/tomcat-7.0.27/bin/shutdown.sh'

sleep 5

'/usr/server/tomcat-7.0.27/bin/shutdown.sh'

sleep 15

pid=`ps -auxww|grep tomcat|grep -v grep|awk '{print $2}'`

if [ -n "$pid" ];

then

{

echo "======to kill the tomcat pid $pid========"

kill $pid

sleep 3

}

fi

echo "==========start tomcat============"

'/usr/server/tomcat-7.0.27/bin/startup.sh'

}

else

{

echo "==========tomcat is stop=====start======="

'/usr/server/tomcat-7.0.27/bin/startup.sh'

}

fi
 

2.在新建任務計劃：利用crontab -e命令，於02:00執行重啟服務

10 02 * * * /usr/server/tomcat-7.0.27/bin/startup.sh

3.啟動定時服務

[root@]# service crond stop

[root@]# service crond start

4.檢視該任務是否在定時列表裡面：

[root@]# crontab -l

10 02 * * * /usr/server/tomcat-7.0.27/bin/startup.sh