VERSION=$1
-rm -rf calibre
-tar -xvzf calibre-$VERSION.tar.gz
+tar -xvJf calibre-$VERSION.tar.xz
rm -f calibre/resources/fonts/liberation/*
rm -f calibre/resources/fonts/prs500/*
-tar -cvjf calibre-$VERSION-nofonts.tar.bz2 calibre
+tar -cvJf calibre-$VERSION-nofonts.tar.xz calibre