//连接数据库
mysql -h xxx -u root -p;
//查看数据库
show databases
//查看数据表
show tables
//查看某数据表结构
desc xxx表
//修改root密码
http://www.kuqin.com/database/20080306/4249.html
use mysql;
UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
FLUSH PRIVILEGES;