That is seriously neat. But! The user has to know this. Surely, if you're trying to copy a 6GB file, it's better to take a lesson from wget and print a progr

That is seriously neat. But! The user has to know this. Surely, if you're trying to copy a 6GB file, it's better to take a lesson from wget and print a progress indicator than force the user to (1) read the man page, and (2) keep polling the program to ask how it's doing.