Decompressing .tar.xz

[Mihamina Rakotomandimby]

> Tom H <tomh0665 at gmail.com> :
> > I downloaded TeX Live 2009 as a .tar.xz archive and tried to
> > decompress it with tar xvzf texlive-20091107-texmf.tar.xz
> > but I always get the following error
> > gzip: stdin: not in gzip format
> > tar: Child returned status 1
> > tar: Exiting with failure status due to previous errors
> > How could I decompress the archive? 
> tar xvJf texlive-20091107-texmf.tar.xz
> 

He has to install xz utilities first.
It's not bundled into tar.

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