How to create user and set password in mysql

First login root user in mysql

        [root@sysadmin ~] # mysql -u root -p
 
Create the user

               mysql > create user test_user@localhost;

Set password for 'test_user'

          mysql > SET PASSWORD FOR 'test_user'@'localhost'  =  PASSWORD('test@1234');

Check test_user can able to login or not

      [root@sysadmin ~]# mysql  -u  test_user  -p
      Enter password:
 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.1.67-log Source distribution

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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> exit

 Successfully created user and set password. 


Check user list on mysql

                mysql> SELECT User FROM mysql.user; 


How to remove user in mysql

           mysql>  drop   user   'test_user'@'localhost';