循环脚本

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很多时候我们在执行sh命令需要执行一个时间段的脚本任务，循环调用是很常见的，以下的脚本用于递归执行一个时间段的脚本。

代码如下：

#!/bin/sh

#circle_operate.sh    脚本名称

#run shell script between two date

#程序递归脚本

#OPERATE_DATE        操作数据日期

#author:wangxin   version:1.0 

#create_date:20160202 

##################################################################

#check the input param num is correct

#判断入参个数是否正确

#check the first param is not empty

if [ -z "$1" ]; then

echo "param1 error "

echo "you need to input a pre_commond"

echo "the correct formate is : ./circle_operate.sh  commond1start_date end_date commond2"

exit 

fi

#check the second param is not empty

if [ -z "$2" ]; then

echo "param2 error "

echo "you need to input a start date"

echo "the correct formate is : ./circle_operate.sh  commond1start_date end_date commond2"

exit 

fi

#check the third param is not empty

if [ -z "$3" ];then

echo "param3 error "

echo "you need to input a end date"

echo "the correct formate is : ./circle_operate.sh  commond1start_date end_date commond2"

exit 

fi

#check the fourth param is not empty

if [ -z "$4" ];then

echo "param4 error "

echo "you need to input a end_commond"

echo "the correct formate is : ./circle_operate.sh  commond1start_date end_date commond2"

exit    

fi

#

#

echo "program start"

#Achieve first commond 

#获取前部分命令

begin_commond=$1

echo "begin_commond is $begin_commond"

#

#Achieve start_date

#获取开始日期

begin_date=$2

echo "begin_date is $begin_date"

#

#Achieve end_date

#获取结束日期

end_date=$3

echo "end_date is $end_date"

#

#Achieve start_date

#获取后部分命令

end_commond=$4

echo "end_commond is $end_commond"

#

#mark the last_date

#明确结束日期

last_date=`date -d $end_date' next-day' '+%Y%m%d' `

echo "the script will exit before $last_date"

#

#set operate_date

#给运行日期赋值

operate_date=$begin_date

#

while [ $operate_date -lt $last_date ]

do

echo "the current operate_date is $operate_date"

echo "$begin_commond $operate_date $end_commond"

operate_date=`date -d $operate_date' next-day' '+%Y%m%d'`

done

#

echo "program exit"