Bat批处理学习
bat学习帖子：
http://xstarcd.github.io/wiki/windows/windows_cmd_summary.html
https://blog.csdn.net/u010319687/article/details/17416259
https://blog.csdn.net/z22050519/article/details/17019137
https://www.zhihu.com/question/34941855
bat学习网站：
https://www.w3xue.com/server/msdos/
https://www.w3cschool.cn/pclrmsc/
https://www.jb51.net/help/cmd.htm
