> 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