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Date: Mon, 16 Aug 2010 10:36:41 +0200
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Subject: Re: [gentoo-user] How to build a time machine on Gentoo
From: Marco <listworks@gmail.com>
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On Mon, Aug 16, 2010 at 1:11 AM, Nganon <nganon+gentoo@gmail.com> wrote:
> [...]
> Here is what I wanna do. I want to have only one big backup for, say,
> userA-2010.08.07.tgz and other small backup tars containing only the
> files/folders that were modified since last update, 2010.08.07, as
> userA-diff-2010.08.14.tgz, userA-diff-2010.08.21.tgz,
> =A0userA-diff-2010.08.28.tgz
> etc. Now if I want to take the userA back to the future, 2010.08.21, =A0I=
 want
> to
> do it by first extracting the huge tar userA-2010.08.07.tgz and then the
> tiny
> backup userA-diff-2010-08-21.tgz.

backup2l can do exactly what you want:

http://backup2l.sourceforge.net/

HTH!

--
Marco