Password modification and elimination of MySQL root user _mysql

I. Password modification: Using the mysqladmin command

1, for example, your root user does not have a password now, you want to change the password to ABC, then the command is: mysqladmin-u root password ABC

2, if your root now has a password, then modify the password for ABC command is: mysqladmin-u root-p password Youyou
Note that the command return will ask you the old password, enter the old password after the command completed, password modification successful.
Second, the elimination of passwords

1. Log in as root: Mysql-u root-p

2, Mysql>use MySQL;

3, mysql>update user set password= ' where user= ' root ';
You can restart the MySQL service.