MySQL Change a User Password

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I would like to change a password for a user called tom using UNIX / Linux command line option. How do I change a user password under MySQL server?


You need to use mysql (or mysql.exe on MS-Windows based system) under Linux or Unix like operating system. Open a terminal / ssh session. Type the following command at the shell prompt to login as a root user. The syntax is as follows for Unix like operating system:

$mysql -u root -h localhost -p

OR use mysql.exe under MS-Windows host as follows (first change directory where mysql.exe is located [example: “C:\Program Files\mysql\mysql-5.0.77-win32\bin”] ):

mysql.exe -h localhost --user=root -p

You will see mysq> prompt as follows:

mysq>

Syntax: Sql command to change a user password

Switch to mysql database (type command at mysql> prompt, do not include string “mysql>”):
mysql> use mysql;

The syntax is:

SET PASSWORD FOR 'user-name-here'@'hostname-name-here' = PASSWORD('new-password-here');

You can also use the following sql syntax:

UPDATE mysql.user SET Password=PASSWORD('new-password-here') WHERE USER='user-name-here' AND Host='host-name-here';

In this example, change a password for a user called tom:

SET PASSWORD FOR 'tom'@'localhost' = PASSWORD('foobar');

OR

UPDATE mysql.user SET Password=PASSWORD('foobar') WHERE USER='tom' AND Host='localhost';

Sample outputs:

Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

Feel free to replace the values for “tom” (user), “localhost” (hostname), and “foobar” (password) as per your requirements. Finally, type the following command to reload privileges:

FLUSH PRIVILEGES;

Sample outputs:

Query OK, 0 rows affected (0.00 sec)

To exit from mysql> prompt, enter:

quit;

Sample session

Fig.01: Mysql Updating / Changing password (click to enlarge)
Fig.01: Mysql Updating / Changing password (click to enlarge)

Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter, Facebook, Google+.

13 comment

  1. [email protected] says:

    Small modification in 3rd step… according to the mysql documentation, the password should be typed within single quotes instead of double quotes. But double quotes works. Refer the example below…

    mysql> UPDATE user SET Password=PASSWORD(‘NEW-PASSWORD-HERE’) WHERE User=’tom’;

    Another thing to mention, make sure you change the password for both the local and remote users because if a remote application server (ex-jboss) or in php connecting to mysql server it will still be needed the old password since it is remaining unchanged.

    So according to this scenario the proper commands should be…

    mysql> UPDATE user SET Password=PASSWORD(‘NEW-PASSWORD-HERE’) WHERE User=’tom’ AND Host=’local’;

    mysql> UPDATE user SET Password=PASSWORD(‘NEW-PASSWORD-HERE’) WHERE User=’tom’ AND Host=’%’;

    1. [email protected] says:

      Forgot to mentioned….

      the first single command will do the password change for local and remote which is..

      mysql> UPDATE user SET Password=PASSWORD(‘NEW-PASSWORD-HERE’) WHERE User=’tom’;

  2. I did installed a xampp and mysql don’t change the root password in this time.

    SET PASSWORD FOR ‘root’@’localhost’ = PASSWORD(‘<the_my_password'); gives Query OK, 0 rows affected.

  3. In MySQL 5.7 the Password field has been removed and replaced with authentication_string . So, UPDATE mysql.user SET Password=PASSWORD('foobar') WHERE USER='tom' AND Host='localhost'; throws an error;

    ERROR 1054 (42S22): Unknown column 'Password' in 'field list'

    Use UPDATE mysql.user SET authentication_string=PASSWORD('foobar') WHERE USER='tom' AND Host='localhost'; instead.

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