#!/bin/sh
# mysql data backup script
#
# use mysqldump --help,get more detail.
#
BakDir=/root/back/mysql
LogFile=/root/back/mysql/mysqlbak.log
DATE=`date +%Y%m%d%H%M%S`
echo " " >> $LogFile
echo " " >> $LogFile
echo "-------------------------------------------" >> $LogFile 
echo $(date +"%y-%m-%d %H:%M:%S") >> $LogFile 
echo "--------------------------" >> $LogFile 
cd $BakDir
DumpFile=$DATE.sql
GZDumpFile=$DATE.sql.tar.gz
/usr/local/bin/mysqldump -u user -pname  --database -h 127.0.0.1 db> $DumpFile
echo "Dump Done" >> $LogFile
tar czvf $GZDumpFile $DumpFile >> $LogFile 2>&1 
echo "[$GZDumpFile]Backup Success!" >> $LogFile 
rm -f $DumpFile 
#cd $BakDir/daily
cd $BakDir   
echo "Backup Done!"
echo "please Check $BakDir Directory!"
echo "copy it to your local disk or ftp to somewhere !!!"
find $BakDir -ctime +30 -exec rm {} \;
echo "delete file over 30 days"

其中user，name和db请根据自己的情况修改

增加一个可以每个数据库分开备份的脚本

mysql -uroot -p -N -e 'show databases' | while read dbname; do mysqldump -uroot --complete-insert "$dbname" > "$dbname".sql; done