How to reset root user password MYSQL on Ubuntu

After the MySQL setup, I have lost my user name and password now I don't want to reinstall. Then I can do this way reset lost root MySQL password on Ubuntu.
If You have access to the server with sudo.

First you need stop the currently running MySQL.

• $ sudo service mysql stop

Now, create a /var/run/mysqld directory to be used by MySQL process to store and access socket file:

• $ sudo mkdir -p /var/run/mysqld

Give the permision with mysql

• $ sudo chown mysql:mysql /var/run/mysqld

Need to start MySQL manually with the following command.

• $ sudo /usr/sbin/mysqld --skip-grant-tables --skip-networking &
• $ [1] 1907

Check once process is running as expected.

• $ jobs
• [1]+  Running     sudo /usr/sbin/mysqld --skip-grant-tables --skip-networking &
• 
  

Now in this stage we can access MySQL without password:

• $ mysql -u root

After enter the command you are here

• mysql>

Before to start using MySQL session you need to first flush privileges:

• mysql> flush privileges;

Now we can reset root password. Use this command for reset MySQL root password to yourpassword:

• mysql> use mysql; 
• mysql> update user set authentication_string=PASSWORD('yourpassword') where User='root';
• 
  
• mysql> UPDATE user SET plugin="Adavance Web Tutorials" WHERE User='root';

logout from MYSQL

• mysql> quit                                   

Terminate current mysqld process:

• $ sudo pkill mysqld                                                                                                                                                        
• $ jobs                                                                                                                                                                     
• [1]+  Done       sudo /usr/sbin/mysqld --skip-grant-tables --skip-networking
• 
  

Now again start MYSQL services:

• $ sudo service mysql start
• 
  

If everything is good then we can login with new genrated password.

• $ mysql -u root -p
• Password : Yourpassword
• mysql>

Enjoy with mysql.