mysql中root密碼之更改

通用方法：

   1)service mysqld stop

   2)service mysqld restart --skip-grant-tables --skip-networking

   3)mysql

   4)update mysql.user set password = PASSWORD('新密碼') where user = 'root';

   5)flush privileges;

   6)service mysqld stop

   7)service mysqld restart

低版本：

    service mysqld stop

    mysqld_safe --skip-grant-tables &

    mysql

    update mysql.user set password = PASSWORD('新密碼') where user = 'root';

    flush privileges;

    service mysqld stop

    service mysqld start