Ruby twitter bot in 25 lines

Using ruby to make a tiny twitter bot is so simple. So in 25 lines I used the twitter and hpricot gems to make a bot that pulls a random quote from the puerile b3ta.com/talk.

# Rakefile

require 'rake'
require 'twitter'
require 'hpricot'
require 'open-uri'
namespace :b3ta do
  desc 'find a random quote from b3ta.com/talk and post it to twitter'
  task :random_quote do
    hdoc = Hpricot(open('http://www.b3ta.com/talk').read)
    subs = []
    hdoc.search(".post1, .post2") do |post|
      username, subject = '', ''
      post.search(".username") do |un|
        username = un.inner_html
      end
      post.search("b") do |b|
        subject = b.inner_html.to_s.gsub(/<\/?[^>]*>/, "")
      end
      subs << "\"#{subject}\" #{username}" if subject != ''
    end
    message = subs[rand(subs.size - 1)]
    twitter = Twitter::Base.new('twitter_username','twitter_password')
    twitter.post(message)
    puts message
  end
end

To set it up and running, just put in a real twitter account and use “rake b3ta:random_quote”. Simple. Ok it may lack any error checking what so ever, but its still amazing what you can do with Ruby with such little code. (check out the rather offensive twitter feed here)