脚本说明：
把需要备份的目录或文件写在project.list文件中，一行一个；
脚本通过for循环来读取project.list文件，对每行文件进行tar压缩；
根据备份日期作为文件名；
相关操作都会记录到日志文件中；
自动删除备份时间超过30天的文件。
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#!/bin/bash
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#author: TangLu
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#date: 2015-07-16
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#role: backup
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##################################################
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BAKDIR=/backup
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BAKLOGDIR=/backup/log
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LOGFILE=/backup/log/bak.`date +"%Y-%m-%d"`.log
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##################################################
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[ ! -d $BAKDIR ] && mkdir $BAKDIR
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[ ! -d $BAKLOGDIR ] && mkdir $BAKLOGDIR
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echo "--------------------------------------------------" >> $LOGFILE
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echo "!!!BACKUP START!!! at `date +"%Y-%m-%d %H:%M:%S"`" >> $LOGFILE
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echo "--------------------------------------------------" >> $LOGFILE
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echo " " >> $LOGFILE
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cd $BAKDIR
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for i in `cat /shell/project.list`
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do
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BAKFILE=$BAKDIR/$i.`date +"%Y-%m-%d"`.tar.gz
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if [ -f $BAKFILE ]
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then
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echo "backup file $BAKFILE is exist !" >>$LOGFILE
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else
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tar -zcf $BAKFILE $i > /dev/null 2>&1
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echo "backup $i done into $BAKFILE ">> $LOGFILE
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echo " " >> $LOGFILE
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fi
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OLDFILE=$BAKDIR/$i.`date --date="30 days ago" +"%Y-%m-%d"`.tar.gz
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if [ -f $OLDFILE ]
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then
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rm -rf $OLDFILE
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echo "Delete old files success!" >> $LOGFILE
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fi
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done
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echo "--------------------------------------------------" >> $LOGFILE
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echo "!!!BACKUP END!!! at `date +"%Y-%m-%d %H:%M:%S"`" >> $LOGFILE
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echo "--------------------------------------------------" >> $LOGFILE
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