mysql error，slow query日志分割脚本

脚本作用:1、删除一个月前的errolog
         2、按天分割slow日志，删除一个月前的slow日志
         3、删除5分钟前的MD5，备份文件
5 7 * * * /home/mysql/scripts/logstatus.sh

#!/bin/sh
    DATE=`date +'%Y%m%d'`
    LDATE=`date -d last-day +'%Y%m%d'`
    lastmonth=`date -d last-month +'%Y%m%d'`
    DATADIR=/data1/mysqldata/data
    SLOWLOGDIR=/data/mysqllog/slowquery
    DBBAK_DIR=/data/dbbak
    MD5_DIR=/home/mysql/logs/logmd5
    #####################
    #errlog clear every month
    #####################
    vdate=`date +'%d'`
    if [ $vdate -eq 11 ];then
    cd $DATADIR
    cp -f ${HOSTNAME}.err bak_${DATE}_${HOSTNAME}.err
    :>${HOSTNAME}.err
    rm -f bak_${lastmonth}_${HOSTNAME}.err
    fi
    #####################
    #slowlog swith every day
    #####################
    cd $SLOWLOGDIR
    cp -f slow-query.log ${LDATE}-slow.log
    :>slow-query.log
    rm -f ${lastmonth}-slow.log
    ######################
    #MD5 clear every day
    ######################
    cd $MD5_DIR
    find -mtime +5 -name '*.md5' | xargs rm -f {}\;
    #####################
    #dbbak clear every day
    ######################
    cd $DBBAK_DIR
    find -mtime +5 -name 'bak_*' | xargs rm -f {}\;