grab links for railcasts episodes

railcasts_episodes.rb

require 'mechanize'

@agent = Mechanize.new { |agent| agent.user_agent_alias = 'Mac Safari' }
url = "http://railscasts.com/episodes/13-dangers-of-model-in-session"
page = @agent.get url
links = []
while page.link_with(:text => /next/i)
  break if page.search("//*[@id=\"episode\"]/div[1]/ul/li[2]/a").first.nil?
  links << page.search("//*[@id=\"episode\"]/div[1]/ul/li[2]/a").first.attributes["href"].value
  page = page.link_with(:text => /next/i).click
end
axel = links.collect { |link| "axel -a #{link}" }.join("\n")
File.open(ENV['HOME']+"/railscasts_axel.txt", 'w') {|f| f.write(axel) }