Extract multiple files from USB HDD

[Archimede]

I have to extract certain files (only a handful of extensions) from a USB HDD that contains more than 2 million files (in all possible formats and nested in several layers of subfolders).

Can anybody suggest me a nice utility to take care of this extremely time consuming task?

Ideal scenario: I set the parameters (the actual extensions that I really need), I run the tool and the morning after I find on my USB HDD only the few folders (named something like "doc & docx", "xls & xlsx", "pdf", "zip"... etc) that contain my files... Nothing else, no empty folders and no other files except these having the extensions that I indicated. Eventual filename conflicts to be solved with an appended progressive number (or custom text)... Error logging could be a plus (since I have the exact same copy on a second HDD from which I could eventually "pluck out" some accidentally deleted files/folders). I will take care of duplicates at a later stage but if this "wonder tool" could reliably do that I would obviously not mind ;)

Thanks for any creative suggestion :)

[Alhaitham]

FastCopy can do that

see the Filter section

http://ipmsg.org/tools/fastcopy.html.en

[Archimede]

Thanks for your suggestion but I concluded that I will solve this issue with a batch script... I put it together and it is getting the job done just as I need it. Once more I have been amazed by the fact that the commands of a batch file can be quite powerful/useful!

A simple Notepad created script is now doing the job without downloading/installing anything and without involving Windows Explorer, which clearly cannot handle folders containing too many files.

Sometimes the easiest solution is indeed the best!