[arch-general] Script for finding and "moving" older duplicate packages from /var/cache/pacman/pkg

[Patrick Brisbin]

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.

-- 
patrick brisbin