autodel自动化删除日志文件脚本

•                              autodel.sh脚本使用说明
  功能描述
             自动删除过期的日志文件，具体删除天数，可以在脚本中" if((LogDay+3 < NowGetDay))"行进行修改；
             日志格式类似：2010-5-12-12-59-44.txt
  技术点：
            @获取年月日数字
             NowGetDay=`date +%d`
             NowGetMonth=`date +%m`
             NowGetYear=`date +%Y`
           @字符串与数字转换
            NowGetDay=`expr ${NowGetDay} + 0`
            加号操作符两边必须是空格
           @字符串的分割和截取
             LogYear=`expr ${LogFileName#*"./"} |cut -d "-" -f1`
             把"./"去掉，然后通过"-"进行分割，其中LogFileName为./2010-5-12-12-59-44.txt

 

#! /bin/bash####################################File Name: autodel.sh#Version Number: 1.0/0.0#Describtion: remove log files beyond some days automatically,and the format of log file is like "2010-5-12-12-12-12.txt"#Author: LiWei#Date: 2010-5-12#Change Log:# $$$Revision 0.9,2010-5-12 by LiWei# Set 3 days the period to remove log files automatically#$$$Revision 0.8,2010-5-11 by LiWei# Get original version###################################NowGetDay=`date +%d`NowGetDay=`expr ${NowGetDay} + 0` #insure space on both sides of plus operatorNowGetMonth=`date +%m`NowGetMonth=`expr ${NowGetMonth} + 0`NowGetYear=`date +%Y`NowGetYear=`expr ${NowGetYear} + 0`echo "NowGetDay="${NowGetDay}echo "NowGetMonth="${NowGetMonth}echo "NowGetYear="${NowGetYear}echofor LogFileName in `find ./ -name "*-*-*-*.txt"`doecho "LogFileName="${LogFileName}#split LogFileName string with "-" char ,then intercept the first row to get specific year number by removing "./" string,at last save the specific year number in LogYearLogYear=`expr ${LogFileName#*"./"} |cut -d "-" -f1` #intercept the second row to get specific month saved in LogMonthLogMonth=`expr ${LogFileName} | cut -d "-" -f2`#intercept the third row to get specific day saved in LogDayLogDay=`expr ${LogFileName} |cut -d "-" -f3`echo "LogYear="${LogYear}echo "LogMonth="${LogMonth}echo "LogDay="${LogDay} if((LogYear < NowGetYear)) then rm -f ${LogFileName} echo "LogYear "${LogYear}"<"${NowGetYear} echo "rm "${LogFileName}" succeed!" echo continue fi if((LogMonth < NowGetMonth)) then rm -f ${LogFileName} echo "LogMonth "${LogMonth}"<"${NowGetMonth} echo "rm "${LogFileName}" succeed!" echo continue fi if((LogDay+3 < NowGetDay)) #rm log files with date beyond three days then rm -f ${LogFileName} echo "LogDay+3 "`expr ${LogDay} + 3`"<"${NowGetDay} echo "rm "${LogFileName}" succeed!" echo continue fiechodone