MySQL修改root密码

mysql -u root
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpa1s');

mysqladmin -u root password "newpass"

如果root已经设置过密码，采用如下方法

mysqladmin -u root password oldpass "newpass"

mysql -u root;
　　mysql> use mysql;
　　mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
　　mysql> FLUSH PRIVILEGES;