$ set /var/lib/apt/lists/*pkglist.* $ pkglist-query '[%{ProvideVersion}\n][%{RequireVersion}\n]' $@ | (time sort -u) |wc -l 0.25s user 0.03s system 36% cpu 0.782 total 76928 $ pkglist-query '[%{ProvideVersion}\n][%{RequireVersion}\n]' $@ | (time sort -u -R) |wc -l 8.66s user 0.09s system 94% cpu 9.304 total 76928