dump all mysql databases

#!/bin/bash

read -p "Enter username: " user
read -s -p "Enter password: " pass
echo "Ok, here we go..."
OUTPUT="/var/www/archive/db"

mkdir -p $OUTPUT

databases=`mysql -u $user -p$pass -e "SHOW DATABASES;" | tr -d "| " | grep -v Database`

for db in $databases; do
    if [[ "$db" != "information_schema" ]] && [[ "$db" != "performance_schema" ]] && [[ "$db" != "mysql" ]] && [[ "$db" != _* ]] ; then
        echo "Dumping database: $db"
        mkdir -p $OUTPUT/$db
        mysqldump -u $USER -p$pass --databases $db > $OUTPUT/$db/`date +%Y%m%d`.$db.sql
    fi
done