贡献一个自己写的批处理，方便MDK备份1 根据日期更新，替换掉日期较早的，日期相同的不备份

2 有删除冗余文件功能，运行后输入Y确定，可以对比并删除备份文件夹内多余的文件。我自己验证有一段时间了，一直没什么问题。 我的电脑上是两个硬盘，D盘是固态盘，工程文件存放在机械硬盘里。注意 我的电脑里面是有s盘的，是个内存盘，如果没有这个盘的需要替换下批处理的s:\-Contribution to write a batch processing, convenient backup of the MDK 1 according to the date of renewal, replacing the earlier date, date the same backup

2 have to delete redundant file function, can determine the operation input after the Y, contrast and delete files redundant backup folder. I verify their own for a long time, has no problem. My computer is two hard disk, D disk is solid state disk, project file stored in the mechanical hard disk. Note that in my computer is a s disk, a RAM disk, if there is no need to replace the disk batch s:\