linux寫定時腳本 重啓部署tomcat

1、安裝

yum install  vixie-cron

yum install  crontabs

 

2、啓動    service crond start

 

3、設置開機自啓： systemctl enable crond.service

 

4、添加定時任務

vim /etc/crontab

在末尾添加   */1 * * * * root /opt/demo.sh >> /opt/demo.txt

過一分鐘看demo.txt裏有記錄了

 

5、demo.sh示例內容

#!/bin/bash

tomcat_home=/usr/local/tomcat
SHUT_DOWN=$tomcat_home/bin/shutdown.sh
START_UP=$tomcat_home/bin/startup.sh

echo 'hello'
###########################      tomcat    #############################

PID=`ps -ef |grep $tomcat_home/conf  |grep -v grep | awk '{print $2}'`

if [ ! "$PID" ];then
  echo 'proccess dont exist'
else
  echo 'kill process PID:$PID'
  kill -9 $PID
fi

current_time=/opt/web_bak/$(date "+%Y%m%d") 
echo $current_time
if [ ! -d "$current_time" ];then
  mkdir $current_time
else
  echo "file exist"
fi

#back old war
if [ -f "$tomcat_home/webapps/demo.war" ];then
  cp $tomcat_home/webapps/demo.war $current_time/
fi

#use new war
if [ -f "/opt/demo.war" ];then
  cp /opt/demo.war $tomcat_home/webapps/
fi

$START_UP

echo 'end'