MariaDB – script for create database with user

#! /bin/bash
newUser='testuser'
newDbPassword='testpwd'
newDb='testdb'
host=localhost
#host='%'

commands="CREATE DATABASE \`${newDb}\`;CREATE USER '${newUser}'@'${host}' IDENTIFIED BY '${newDbPassword}';GRANT USAGE ON *.* TO '${newUser}'@'${host}' IDENTIFIED BY '${newDbPassword}';GRANT ALL privileges ON \`${newDb}\`.*
TO '${newUser}'@'${host}';FLUSH PRIVILEGES;"

echo "${commands}" | /usr/bin/mysql -u root -p