This is Perl module WWW::Shorten::Durl.
INSTALLATION
WWW::Shorten::Durl installation is straightforward. If your CPAN shell is set up,
you should just be able to do
% cpan WWW::Shorten::Durl
Download it, unpack it, then build it as per the usual:
% perl Makefile.PL
% make && make test
Then install it:
% make install
DOCUMENTATION
WWW::Shorten::Durl documentation is available as in POD. So you can do:
% perldoc WWW::Shorten::Durl
to read the documentation online with your favorite pager.
JEEN