#!/bin/bash

USER="YOUR USER NAME"
PASSWORD="YOUR PASSWORD"

ExcludeDatabases="Database|information_schema|performance_schema|mysql"
databases=`mysql -u $USER -p $PASWORD -e "SHOW DATABASES;" | tr -d "| " | egrep -v $ExcludeDatabases`
for db in $databases; do
        echo "Dumping database: $db"
        mysqldump -u $USER -p$PASSWORD --databases $db > `date +%Y%m%d`.$db.sql
done