>On Sun, Feb 7, 2010 at 6:11 PM, Theo de Raadt <dera...@cvs.openbsd.org> wro= >te: >> And in mv, for the cross-device case? =A0I see others that do fast >> reads, like sum. =A0diff? =A0cmp? =A0grep? =A0How many others? =A0If cp(1= >) >> is such a common operation (I bet it isn't), how soon before other >> programs doing exactly the same thing want the same chunk of code? > >If mv has different file copying code than cp, that's a bug that can be fix= >ed... > >How many *writes* does sum do? It doesn't need a large buffer because >it's not moving the disk heads to two different locations. > >I don't know how cmp works, but diff reads both *entire* files into >memory before processing, so that's not a good example of how to do >things.
So, you wish to discuss that, instead of all the other points I bring up?
