How can I get a list of user accounts using the command line in MySQL?

I'm using the MySQL command-line utility and can navigate through a database. Now I need to see a list of user accounts. How can I do this?

I'm using MySQL version 5.4.1.

Use this query:

SELECT User FROM mysql.user;

Which will output a table like this:

+-------+
| User  |
+-------+
| root  |
+-------+
| user2 |
+-------+

An advanced and efficient answer is the use of a stored procedure to retrieve MySQL users because it simplifies this repeated query, improves readability, and makes it easier to manage access in a secure, reusable way. You type it once, then you only need to type: CALL mysql.users(); to retrieve your mysql users.

USE mysql;
DELIMITER $$
CREATE PROCEDURE users()
BEGIN
  SELECT CONCAT(QUOTE(user), '@', QUOTE(host)) AS Users
  FROM mysql.user
  ORDER BY user, host;
END $$
DELIMITER ;
CALL mysql.users();