【mysql 常用option】
--host=, host_name-h host_name
Connect to the MySQL server on the given host.
--port=, port_num-P port_num（注意 P 是大写）
The TCP/IP port number to use for the connection.
--password[=, password]-p[password]
The password to use when connecting to the server. If you use the short option form (-p), you cannot have a space between the option and the password. If you omit the password value following the --password or -p option on the command line, mysql prompts for one.
参考：http://dev.mysql.com/doc/refman/5.7/en/mysql-command-options.html#option_mysql_password
