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 on MySQL server?

You need to use mysql (or mysql.exe on MS-Windows based system) command on a Linux or Unix like operating system. Open a terminal app or 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.

How to change user password on mysql

Mysql change user password using the following method:

  1. Open the bash shell and connect to the server as root user
  2. mysql -u root -h localhost -p
  3. Run command:
  4. ALTER USER 'userName'@'localhost' IDENTIFIED BY 'New-Password-Here';

Please note that use mysql.exe on MS-Windows host as follows (first change directory where mysql.exe is located [example: “C:\Program Files\mysql\mysql-5.0.77-win32\bin”]. Let us see examples and syntax in details.

mysql sql command to change a user password

Login as root from the shell:
$ mysql -u root -p
Switch to mysql database (type command at mysql> prompt, do not include string “mysql>”):
mysql> use mysql;
The syntax is as follows for mysql database server version 5.7.5 or older:

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

For mysql database server version 5.7.6 or newer use the following syntax:

ALTER USER 'user'@'hostname' IDENTIFIED BY 'newPass';

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;

User or you can test new password using the following shell syntax:
mysql -u tom -p
When promoted enter new password you set earlier for tom user.

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, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.

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Historical Comment Archive

13 comment

  1. 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. 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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