[ale] Binary Matching

pras at cycloeastern.com pras at cycloeastern.com
Tue Jun 7 17:27:18 EDT 2005


I don't know if this would work...

cksum both the files and check that the check sums are equal.

I have never met two unequal binaries whos checksums are equal :)
However there might be a failure scenario that I am not thinking of.


On Mon, Jun 06, 2005 at 10:14:11AM -0400, Mister Anonymous wrote:
> I need to do some binary matching across many files and was wanting to
> get some recommendations on how to do it.  I would like to be able to
> grab a section of binary data from one file (approximately 500
> continuous bytes) and check and see if that is included in other
> binary files.  Any recommendations on an easy way to extract the
> initial 500 bytes (assume I would like to do it from some particular
> offset in the file) and then search for that data in the other file?
> 
> I am afraid that perl might be the best way to do this, but I am not
> that much of a perl hacker.  If there is an easy way to do it using
> python or a shell script, that would be preferable.
> 
> Thanks.
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-- 
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Prasanna Subash            | "When anyone says `theoretically,' they
pras at cycloeastern.com      | really mean `not really.'"  -- David Parnas
                           | 
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