From: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Date: Sat, 30 Apr 2005 00:13:02 GMT
Subject: Re: [PATCH] GIT: Create tar archives of tree on the fly
Message-ID: <4272CD8E.8040706@lsrfire.ath.cx>
In-Reply-To: <Pine.LNX.4.58.0504291522250.18901@ppc970.osdl.org>

Linus Torvalds schrieb:
> 
> Having just done the git-0.7.tar.gz file with git-tar-tree, I started
>  wondering if there is some nice way to encode the commit version
> that got tarred up into the tar archive itself.

The pax archive format allows for comments; you can store the commit ID
in a (archive-)global comment.  Archivers are supposed to ignore it and
GNU tar at least does so.  You can extract the ID with

   $ dd bs=1 skip=523 count=41 2>/dev/null < TARFILE

because it would always end up at that position at the start of the archive.

Rene