#/usr/local/mysql/bin/mysqld_safe --skip-grant-table&
# /usr/local/mysql/bin/mysql -u root
mysql> use mysql
mysql> UPDATE user SET password=password('newpassword') WHERE user='root';
mysql> FLUSH PRIVILEGES;
重起就可以
# /usr/local/mysql/bin/mysql -u root
mysql> use mysql
mysql> UPDATE user SET password=password('newpassword') WHERE user='root';
mysql> FLUSH PRIVILEGES;
重起就可以