Extract all link from Stanford CS 193P iTunes U feed.

extract-link-url.rb

require 'nokogiri'
require 'open-uri'

doc = Nokogiri::XML(open('https://itunesu.itunes.apple.com/WebObjects/LZDirectory.woa/ra/directory/courses/733644550/feed'))

doc.css('entry').each do |e|
  title = e.css('title').first.text
  link = e.css('link').first.attributes["href"].value
  puts title
  puts link
end