[Exherbo-dev] Two xz questions

Tom Trauth coffee71 at optimum.net
Tue Nov 16 01:19:18 GMT 2010

You are 100% correct.  Pie on my face, I should have read the gnu tar manual more thoroughly :-( .  Fortunately, System Rescue CD has both tar 1.2.3 and xz-utils, so the J options should work.



-----Original Message-----
From: Benjamin R. Haskell [mailto:exherbo at benizi.com] 
Sent: Monday, November 15, 2010 2:04 AM
To: Tom Trauth
Cc: exherbo-dev at lists.exherbo.org
Subject: Re: [Exherbo-dev] Two xz questions

On Sun, 14 Nov 2010, Tom Trauth wrote:

> 1)
> Why does the Getting Started documentation still say that the xz 
> package is a requirement for installing Exherbo?  Since version 1.22, 
> tar has supported xz compression/decompression via the J option.  
> Therefore, in the installation procedure, the line “unxz -c *.tar.xz | 
> tar xpf -“ could be replaced with “tar xpJf *.tar.xz”, eliminating the 
> xz dependency.

The -J flag just allows the use of the xz program as a filter.  `tar` 
doesn't actually contain any support for the compression format 
internally.  You still need xz itself to actually process xz-compressed 

[omitting your other question, as I don't have a response]


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