To install Plack::App::PubSubHubbub::Subscriber, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Plack::App::PubSubHubbub::Subscriber
CPAN shell
perl -MCPAN -e shell
install Plack::App::PubSubHubbub::Subscriber
For more information on module installation, please visit the detailed CPAN module installation guide.