Para ingresar usan el mismo comando que dice el profesor pero de frente desde /
meow@Meow-host:~$ mysql -u root -p <!--Enter-->
Enter password: <!--aqui ingresas tu pw-->
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 11
Server version: 8.0.34-0ubuntu0.22.04.1 (Ubuntu)
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Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> <!--aqui ya puedes ingresar codigo-->