mysql error 1045 access denied for user 'root@localhost'

http://www.linuxquestions.org/questions/linux-software-2/error-1045-28000-access-denied-for-user-root@localhost-using-password-no-459578/ /etc/init.d/mysqld stop mysqld_safe --skip-grant-tables & use mysql; update user set password=PASSWORD("testpass") where User='root'; flush privileges; quit /etc/init.d/mysql restart mysql -u root -p