Backup website to email automatically

nano /var/www/backup/sh/website-backup

#!/bin/sh
BACKUP_PATH=/var/www/backup/website  
if [ ! -d $BACKUP_PATH ]; then  
    mkdir $BACKUP_PATH
fi  
DATE_NAME=`date +%y%m`  
tar -cpPzf $BACKUP_PATH/website-backup-$DATE_NAME.tgz /var/www/website/some-dir && sleep 6 && echo "Website backup $DATE_NAME." | mutt foo@example.com -s "Website backup $DATE_NAME" -a $BACKUP_PATH/website-backup-$DATE_NAME.tgz  
rm -f $BACKUP_PATH/website-backup-$(date +%y%m --date='12 months ago').tgz  
exit  

chmod +x /var/www/backup/sh/website-backup

crontab -e

0 0 1 * * /var/www/backup/sh/website-backup