yahns is available as a RubyGem from RubyGems.org
gem install yahns
No tarballs are currently provided.
You may also install yahns from the git source, see the HACKING document for
more details.
Debian GNU/kFreeBSD:
For now, you will need to define SENDFILE_BROKEN=1 in the env before
running yahns, and also install the "io-extra" RubyGem (tested on 1.2.7)
gem install -v 1.2.7 io-extra