This may be an odd question but........

[bazoukas]

...........is there a command or program that informs you of how much a client downloaded from you from a specific file?

For example, lets say you have a 1 gig file in your server that someone is downloading from you, is there a command or application that tells you how much of the file he has downloaded?

I cant see to find anything in google or in sourceforge.

I dont really need it, but i think its a helpfull tool.

[Membrax]

This is more or less like asking for a "download spyware" :

http://www.grc.com/downloaders.htm