Everyone knows that "copy" means copy. Recently, I found another usage of copy in learning DOS. That is to merge a text file into another non-text file to achieve the role of hiding. For example, if there is a text document on the local disk, it can be merged into, for example, an image, MP3 and other executable files. The syntax is the same. Friends who are interested can give it a try! I will upload my screenshot later!
