只需按照下面3步做，一切都在你的掌控之下：
第一步：在服务器上配置备份目录代码：
--------------------------------------------------------------------------------
mkdir /var/lib/mysqlbackup
cd /var/lib/mysqlbackup
--------------------------------------------------------------------------------
第二步：编写备份脚本代码：
--------------------------------------------------------------------------------
vi dbbackup.sh
--------------------------------------------------------------------------------
粘帖以下代码，务必更改其中的username,password和dbname。
代码：
--------------------------------------------------------------------------------
#!/bin/sh #Username to access the MySQL server USERNAME="username" # Username to access the MySQL server PASSWORD="password" # List of DBNAMES for Backup DBNAME="dbname" #date timestamp for log message DATE=`/bin/date +%Y-%m-%d_%Hh%Mm` #output file OUTDIR="/var/lib/mysqlbackup/" OUTFILE="ip_bindass".$DATE."sql.gz" #working directory DIR="/var/lib/mysqlbackup/"#cd $DIR # MySQL Backup /usr/bin/mysqldump --database $DBNAME --opt --single-transaction -u$USERNAME -p$PASSWORD | /usr/bin/gzip -9 > $OUTDIR$OUTFILE
--------------------------------------------------------------------------------
更改备份脚本权限
代码：
--------------------------------------------------------------------------------
chmod +x dbbackup.sh
--------------------------------------------------------------------------------
第三步：用crontab定时执行备份脚本代码：
--------------------------------------------------------------------------------
crontab -e
--------------------------------------------------------------------------------
若每天下午3点20备份，添加如下代码，
代码：
--------------------------------------------------------------------------------
20 15 * * * /var/lib/mysqlbackup/dbbackup.sh
--------------------------------------------------------------------------------
搞定！