Taking backup of mysql database using cron

Create a file called database_backup.sh and also an empty directory called mysql_backup. The database_backup.sh script should have the following info :

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#!/bin/sh

date=`date ‘+%m-%d-%y’`
mysqldump -u database_username -pdatabase_password database_name > ~/mysql_backup/database_name.$date
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Run the script that performs the backup job.

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* 23 * * * your_userid /path/to/backup/script
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Set this script up to run every night, etc. as a cron job. It will save an sql dump of your database every night in the mysql_backup.