Re: [dev] [ask] search binary file offset in file

From: Alexander Krotov <>
Date: Fri, 24 Mar 2017 23:37:15 +0300

On Fri, Mar 24, 2017 at 08:03:38PM +0200, Amer wrote:
> Does anybody knows any cli tools which allows to search offset
> of one binary file inside another ?
> Find if ./chunk.bin contained and its offset inside ./dump.bin
> * simple case: 200kB inside 100MB
> * hard case: 2GB inside 100GB
> I thought this idea is as old as PC itself, but I couldn't find any
> tool in arch distro, nor by google, nor at github.
> However, maybe my requests simply couldn't their descriptions.
> I acknowledge that implementation isn't as simple as it seems,
> when taking into account performance for hard case.
> But I even couldn't find straight clean implementation in C / mmap().
> I appreciate anything related, even links to sophisticated algorithms,
> if there is really no tool / code-snippet in existence yet.

Not C, but Python:

For C, you can modify this one to make it read pattern from file or
mmap it:
Received on Fri Mar 24 2017 - 21:37:15 CET

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