Re: [gentoo-user] Re: tar a brand new Gentoo install to a USB drive for safe keeping?

2008-05-07 Thread Steven Lembark

 tar xvfp SYSTEM.tar.bz2
 To extract bzip2 files with tar, you need to add the j option.
 That hasn't been needed for a long time. Tar is able to detect bzip2 and
 gzip compression and handle it automatically.

 That's only true for GNU tar. If you're also dealing with other
 systems where you might not have GNU tar, you might be surprised
 to find that tar xvf file.tgz doesn't work.

 Hence I think, that it is a good idea to  keep on using z or j.

Not all of them speak any squish factor, leaving:

gzip -dc blah.tar.gz | tar xvf -;

(or bzip/bzip2) as the most portable route.

-- 
Steven Lembark85-09 90th St.
Workhorse Computing Woodhaven, NY, 11421
[EMAIL PROTECTED]  +1 888 359 3508
-- 
gentoo-user@lists.gentoo.org mailing list



[gentoo-user] Re: tar a brand new Gentoo install to a USB drive for safe keeping?

2008-05-06 Thread Michael Schmarck
Neil Bothwick [EMAIL PROTECTED] wrote:

 On Mon, 5 May 2008 00:04:44 -0400, Ian Graeme Hilt wrote:
 
  tar xvfp SYSTEM.tar.bz2
 
 To extract bzip2 files with tar, you need to add the j option.
 
 That hasn't been needed for a long time. Tar is able to detect bzip2 and
 gzip compression and handle it automatically.

That's only true for GNU tar. If you're also dealing with other
systems where you might not have GNU tar, you might be surprised
to find that tar xvf file.tgz doesn't work.

Hence I think, that it is a good idea to  keep on using z or j.

Michael

-- 
gentoo-user@lists.gentoo.org mailing list



Re: [gentoo-user] Re: tar a brand new Gentoo install to a USB drive for safe keeping?

2008-05-06 Thread Neil Bothwick
On Tue, 06 May 2008 14:40:08 +0200, Michael Schmarck wrote:

  That hasn't been needed for a long time. Tar is able to detect bzip2
  and gzip compression and handle it automatically.  
 
 That's only true for GNU tar. If you're also dealing with other
 systems where you might not have GNU tar, you might be surprised
 to find that tar xvf file.tgz doesn't work.

However, this thread is specifically about using tar on /Gentoo, which
does use GNU tar.

 Hence I think, that it is a good idea to  keep on using z or j.

That really depends on the level of portability your scripts need. Using
z or j is more portable, but also more complex for scripting.


-- 
Neil Bothwick

Top Oxymorons Number 46: Found missing


signature.asc
Description: PGP signature