Easy Way to Reset MYSQL Root Password for Linux User

Stop the MySQL service

Run the following command

For Ubuntu and Debian Users 

sudo /etc/init.d/mysql stop

For CentOS, Fedora, and Red Hat Enterprise Linux Users

sudo /etc/init.d/mysqld stop

Now Start MySQL without a password

Run the following command

sudo mysqld_safe --skip-grant-tables &

Connect to MySQL

mysql -uroot

Set a new MySQL root password

use mysql;

update user set password=PASSWORD("yournewpassword") where User='root';

flush privileges;

quit

Run the following command to Stop and start the MySQL service

For Ubuntu and Debian Users 

sudo /etc/init.d/mysql stop

sudo /etc/init.d/mysql start

For CentOS, Fedora, and Red Hat Enterprise Linux Users

sudo /etc/init.d/mysqld stop

sudo /etc/init.d/mysqld start