This is Perl module Amon2::Plugin::Auth::Hatena. INSTALLATION Amon2::Plugin::Auth::Hatena installation is straightforward. If your CPAN shell is set up, you should just be able to do % cpan Amon2::Plugin::Auth::Hatena Download it, unpack it, then build it as per the usual: % perl Makefile.PL % make && make test Then install it: % make install DOCUMENTATION Amon2::Plugin::Auth::Hatena documentation is available as in POD. So you can do: % perldoc Amon2::Plugin::Auth::Hatena