I can't remember the ID and name of Maria db.

Once you're logged into the MariaDB command line, you can list all databases with the following SQL command:

SHOW DATABASES;

This will show you a list of all the databases on your MariaDB instance.

To list all users, you can use the following SQL command:

SELECT User,Host FROM mysql.user;

This will show you a list of all the user IDs and the hosts they're associated with.