If you've forgotten your root password, you'll need Linux Root login to reset your MySQL root password. Here is the steps for resetting forgotten MySQL root password.

// First login to your Linux box as a root user, and stop mysqld daemon.
# service mysqld stop
 
// Now, start the mysqld daemon without the grant table bypassing 
// authentication
# mysqld_safe --skip-grant-tables &
 
// The mysqld daemon should have started. Now login as a root user
// without the password.
# mysql -u root
mysql> use mysql
 
// Reset the root user password.
mysql> update user set Password=PASSWORD('new-password') where user='root';
mysql> flush privileges;
mysql> exit;
 
// Restart the mysqld daemon, so that the new password will take 
// into effect.
# service mysqld restart

/var/lib/mysql/mysql-pass-recover

UPDATE mysql.user SET Password=PASSWORD('MyNewPass') WHERE User='root';
FLUSH PRIVILEGES;

Restart mysql with new init file

chown mysql:mysql /var/lib/mysql/mysql-pass-recover
/etc/rc.d/rc.mysqld stop
sleep 5
killall mysqld; killall mysqld; killall mysqld; killall mysqld;
sleep 5
mysqld_safe --init-file=/var/lib/mysql/mysql-pass-recover &
sleep 5
killall mysqld; killall mysqld; killall mysqld; killall mysqld;
sleep 5
/etc/rc.d/rc.mysqld start