Today I needed to compute md5 on 1TB+ files on Windows 2003 server, recursively. I’m a regular user of UnixUtils for Windows and thus GNU md5sum, but this time around I needed recursion on directories, something md5sum can’t do on it’s own. On Linux I would probably pipe the result of find command to the md5sum. Instead of writing some DOS (python?) script for Windows, I searched the Google and found md5deep tool that can do recursive operation on directory tree. In downloaded zip file you’ll also find related tools: sha1deep, sha256deep, hashdeep, tigerdeep and whirlpooldeep. Enjoy hashing :)