rudle

module Kernel
  alias_method :_exit, :exit

  def exit(*args, &blk)
    puts "EXIT CALLED BY #{caller.inspect} #{args.inspect}"
    _exit(*args, &blk)
  end
end

rudle

require 'rubygems'
require 'nokogiri'
require 'httparty'

doc = Nokogiri(HTTParty.get('http://www.gutenberg.org/wiki/Harvard_Classics_(Bookshelf)'))

ids = doc.css('a').select{|a| a.attr('title') =~ /ebook:/ }.map do |a|
  a.attr('title') =~ /ebook:(\d+)/
  {:title => a.text, :id => $1 }
end.compact.uniq