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Date:      Fri, 29 Jun 2012 09:21:30 -0700
From:      Devin Teske <devin.teske@fisglobal.com>
To:        Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: "binary diff" utility
Message-ID:  <498CBB31-AF44-42F1-BB64-6C78778B1FC3@fisglobal.com>
In-Reply-To: <alpine.BSF.2.00.1206291751510.45176@wojtek.tensor.gdynia.pl>
References:  <alpine.BSF.2.00.1206291751510.45176@wojtek.tensor.gdynia.pl>

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On Jun 29, 2012, at 8:53 AM, Wojciech Puchar wrote:

> i have many windows images running over virtualbox. each takes several gigabytes. i use flat image format.
> 
> each differs by very little.
> 
> Is there any program that can do "diff" and keep just a difference between each of them instead copy of whole VM disk??

Der, someone over my shoulder highlights the fact that there's "bsdiff" and "bspatch" in the base system for diffing/patching binary files.

But your mileage may vary with such large files. Something from ports that's already been recommended may work better.
-- 
Devin

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