Linux 备份数据库和移除历史备份脚本

#!/bin/bash

logfile='/alidata1/bak/bakdata.log'
bakdir='/alidata1/bak/'

year=`date "+%Y"`
today=`date "+%j"`
prev7date=`date -d "-8 day" "+%Y%m%d"`;

bakdate=`date "+%Y%m%d"`
bakfile=${bakdir}${bakdate}.dbname.sql
bakprevfile=${bakdir}${prev7date}.dbname.sql

if [[ -f $bakprevfile ]]; then
    echo "删除一周前的文件" >> $logfile
    rm -f $bakprevfile
fi


mysqldump -uroot -p'password' dbname > $bakfile