http://zhidao.baidu.com/link?url=sBPoFEBXDB5FoA8x7QxwXV3CpDvMFWNrf0vxWLHVibMQijxaBrKPK8ddcT8EfDhNU5ShvNt6ecyyx5GPaQiuuK
开关：
http://blog.csdn.net/liuyukuan/article/details/5974517
cmd
原文：http://www.cnblogs.com/zshboke-2015/p/5063217.html
