How to login to MySQL:

mysql -u root -p

How to create a MySQL database via Shell:

After you logged in, execute this command (replace dbname with the name of the database you want to create):

mysql> create database dbname;

Output:
Query OK, 1 row affected (0.01 sec)

How to delete a MySQL database via Shell:

mysql> drop database dbname;

Output:
Query OK, 0 rows affected (0.05 sec)

How to create a MySQL User via Shell:

(replace dbusername with the username you want to create)

mysql> create user dbusername;

How to set a password for the MySQL User you just created:

(replace passhere with the password you would like to set)

mysql> set password for dbusername = password('passhere');

How to grant privileges for the username to the database:

mysql> grant all privileges on dbname.* to dbusername@localhost identified by 'passhere';

How to display database tables in a MySQL database?

 
First enter the database by executing:

mysql> use dbname;

 
Now show tables:

mysql> show tables; 

 
To search for a specific table without remembering its exact name:
(where keyword is the partial name you remember)

mysql> show tables in dbname like '%keyword'; 

How to exit MySQL via Shell:

mysql> exit