It's possible to create a command for the console (or create a option for a command, for example: save) where basically, the default is: create a copy of a file, which is not visible?

I wanted this, because, in a moment, I created a elf (linux binary), and I had put the name of the cart that I was editing (where the code of my game was deleted), or, maybe you could edit the help file of the save command, saying that you have to put a name for the binary, and not for the cart on the second option.