linux-kernel - Re: Comparing linux kernel trees.

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Date:	Sun, 20 Jan 2013 14:27:51 +0100
From:	Clemens Ladisch <clemens@...isch.de>
To:	James Courtier-Dutton <james.dutton@...il.com>
CC:	LKML Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Comparing linux kernel trees.

James Courtier-Dutton wrote:
> I have been given a linux kernel sources tar file.
> It contains a modified version of the linux kernel.
> It is just source files, without any "git" history.
> What I would like to do is compare this with the mainline linux kernel
> git tree, and find the tag from the kernel git tree that this source
> code is most similar to.

The kernel *knows* which version it is.

> My plan at the moment is just to automate a checkout of every git tag,
> then run diff -ur on it, and then choose the smallest diff file
> output.
> But, has anyone got a better method?

head -5 Makefile


Regards,
Clemens
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