Я бегал:
sudo gem install ruby-mbox
Тогда:
require "rubygems"
require "ruby-mbox"
mbox = Mbox.new("Inbox")
И получил это:
$ ruby mbox_read.rb
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- ruby-mbox (LoadError)
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from mbox_read.rb:2
Сервер Gem говорит:
ruby-mbox 0.0.2 [rdoc] [www]
A simple library to read mbox files.
Executables are mbox-daemon, mbox-do.