文件夹的智能同步备份程序，可以同步备份文件夹，即创建和需要备份的文件夹一摸一样的另一个文件夹，当备份的文件夹更改之后，可以进行文件夹的同步操作。-Smart folder synchronization backup program, you can synchronize backup folder, that is, the need to create and一摸backup folder to another folder, like when to change the backup