linux中crontab用法

先寫一個啓動腳本: vi runCronMod.sh目錄: /data/yunying/retain/runCronMod.sh

#!/bin/bash

# File: runCronMod.sh

# Usage: ./runCronMod.sh

# Description: 

# Version: 0.1

# Create Date: 2016-09-24 15:48

# Last Modified: 2016-09-24 15:54

# Author: Anton Chen

# Email: [email protected]

[ -f /etc/profile ]&&. /etc/profile

ShellDir="$( cd "$( dirname "$0"  )" && pwd  )"

NowDay=`date +%Y%m%d`

memorySize="512M"

consoleLogFlie="RetainJob-$NowDay.log"

Opt="-ms$memorySize -mx$memorySize"

start ()

{

    cd $ShellDir

    echo $NowDay

    nohup java $Opt -cp original-mobile-yunying.jar:mobile-yunying.jar com.cloudwise.manual.RetainJob $NowDay >>$consoleLogFlie 2>&1 &

    echo -e '\r'

}

start

crontab -e 

00 17 * * * /bin/bash /data/yunying/retain/runCon.sh >/dev/null 2>&1

在UTC時間的17點0分執行這個腳本.並傳入時間2016-9-15這種參數,執行腳本的結果扔到/dev/null

crontab -l  查看定時任務

記得在/etc/profile中配置JAVA_HOME 要不然會提示找不到java命令