hashdeep - md5 or other algorithm hashes recursively
hashdeep -h = display the version plus help
hashdeep -l -v * > HASH-file.txt
-l = relative -v = verbose
hashdeep -r = recursive
hashdeep -w -m -k HASH-file.txt *
show the known hashes compared against all files in current dir
hashdeep -x -k HASH-file.txt *
This should return one file new from above, the HASH-file.txt
hashdeep -r -x -k HASH-firefoxportable.txt o:\2011-03-21-ebs\FirefoxPortable