Comparing binary files

(This thread is a spin-off from this: http://dis.4chan.org/read/comp/1182083741/1-40)

I downloaded 7 linked RARs from Rapidshare. I think that I might've accidentially renamed one RAR during the saving so that I have two identical files with different names.

Could you please tell me if there's some program that can compare binary files and eliminate the possibility of duplicates?


$ man md5sum
$ man sha1sum

fucking sage, this is why i stick to /prog/.