              GNU_URL=${GNU_URL:-ftp://ftp.gnu.org/pub/gnu}
              KDE_URL=${KDE_URL:-ftp://ftp.kde.org/pub/kde}
             CTAN_URL=${CTAN_URL:-ftp://tug.ctan.org/tex-archive}
            GNOME_URL=${GNOME_URL:-https://download.gnome.org}
           KERNEL_URL=${KERNEL_URL:-http://kernel.org}
          XFREE86_URL=${XFREE86_URL:-ftp://ftp.xfree86.org/pub/XFree86}
          SORCERY_URL=${SORCERY_URL:-http://download.sourcemage.org/sorcery/}
      SOURCEFORGE_URL=${SOURCEFORGE_URL:-http://downloads.sourceforge.net/sourceforge}
           APACHE_URL=${APACHE_URL:-http://www.ibiblio.org/pub/mirrors/apache}
        PERL_CPAN_URL=${PERL_CPAN_URL:-http://www.cpan.org}
          BERLIOS_URL=${BERLIOS_URL:-http://download.berlios.de}
