#get the first parameter as the database name
DATABASE=$1
#if no database specified, then you can set the default one
if [ -z $DATABASE ]; then

DATABASE=default_database_name_here

fi



#mysql user and password to backup the database.
MYSQLUSER=mysql_user
MYSQLPWD=mysql_password
#path to backup
ARCHIVEPATH=~/backup/db_backup
DATE=`date +%Y%m%d`
YEAR=`date +%Y`
MONTH=`date +%m`
FOLDER_MONTH=$ARCHIVEPATH/$YEAR$MONTH
if [ ! -d $FOLDER_MONTH ]; then

echo "mkdir $FOLDER_MONTH"
mkdir $FOLDER_MONTH
fi
# Backup
echo "mysqldump -u$MYSQLUSER -p$MYSQLPWD $DATABASE | gzip > $FOLDER_MONTH/$DATABASE-$DATE.sql.gz"
mysqldump -u$MYSQLUSER -p$MYSQLPWD $DATABASE | gzip > $FOLDER_MONTH/$DATABASE-$DATE.sql.gz

and you can add the script to cron job under *nix and schedule under windows:

*nix:

Save the following text in file: db_backup.at

10 * * * * ~/backup/backup_db.sh databasename

and call

crontab db_backup.at

You need to change the period to run the script for your business, e.g. each day, each week etc.