linux-kernel - Re: Smaller compressed kernel source tarballs?

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Date:	Fri, 22 Sep 2006 19:41:37 +0200
From:	Johannes Stezenbach <js@...uxtv.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>,
	Dax Kelson <dax@...ulabs.com>,
	Linux kernel <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...l.org>
Subject: Re: Smaller compressed kernel source tarballs?

On Fri, Sep 22, 2006 at 09:33:01AM -0700, H. Peter Anvin wrote:
> Jan Engelhardt wrote:
> >>>widely used until there is an "lzip" which does the same thing.  I 
> >>>actually started the work of adding LZMA support to gzip, but then 
> >>>realized it would be better if a new encapsulation format with proper 
> >>>64-bit support everywhere was created.
> >>It doesn't handle streaming?
> >>
> >>So you can't do: tar c dirname | 7zip dirname.tar.7z ?
> >
> >man 7z [slightly changed for reasonability]:
> >
> >  -si
> >      Read data from StdIn (eg: tar -c directory | 7z a -si 
> >      directory.tar.7z)
> >
> 
> Yes, but you can't make it write to an unseekable stdout.

It seems the "lzma" program from LZMA Utils can:

http://tukaani.org/lzma/
  "Very similar command line interface than what gzip and bzip2 have."

(Debian sid has this in the "lzma" package.)


Johannes
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