Changing MySql server password!!!!!!!

[harishkharvi]

I am using MySql server...
recently i gave password to mysql root server using command:

mysqladmin password hkspks

how can i change this password hkspks to any other password.....?

and also

if i forget mysql server password, how can i get that......?

[LlNUX]

mysqladmin -u root password newpass -p