[SATLUG] Doublekiller bash clone for Linux

[Eric Haugen]

I came across a nice little tool at work that is called Double Killer (
http://www.bigbangenterprises.de/en/doublekiller/) that will scan through
your directories and flag the locations of doubles of the same file.  It can
check if the names, sizes, dates and the CRC32-Checksums are identical.
Size and checksum are checked by default.

Unfortunately this tool is only available under windows and I would rather
not use wine to run it.

Is there a some kind script/tool that I can run to accomplish the same thing
on my Linux box?

Thanks,
Eric