On Tue, Aug 25, 2009 at 5:03 PM, Patrick Brisbin<pbrisbin@gmail.com> wrote:
On 08/25/09 at 04:45pm, Thomas Bächler wrote:
Patrick Brisbin schrieb:
A while back i wrote a similar script which extracts the .PKGINFO file from each package in one's cache. slow, but I think this is a more accurate way to compare versions.
We had that discussion on arch-dev-public a while ago. makepkg always puts .PKGINFO to the beginning of the tarball. Also, tar and bsdtar both have options to ensure that after the file is found, they stops extracting - therefore, the .PKGINFO file will be extracted instantly, independent of package size. Look at the tar or bsdtar manpages, unfortunately I forgot exactly how it works.
WOW!
tar -xf on a 3 GB cache -> 1m 42s
bsdtar -qxf on the same cache -> 0m 9s
awesome.
according to the man pages I just read online, --fast-read should work for both.