#mkdir -p /home/db_backup
#cd /home/db_backup
#vim mysql_backup.sh
DATE=$(date +%Y%m%d_%H%M%S) /alidata/server/mysql/bin/mysqldump --opt -uroot -ppassword dbname | gzip>/home/db_backup/data/$DATE.sql.gz
#crontab -e */30 * * * * /home/db_backup/mysql_backup.sh
半小时备份一次mysql
原文：http://www.cnblogs.com/bushe/p/4840688.html