gistfile1.rb

require 'rubygems'
require 'mechanize'

agent = Mechanize.new
agent.get('https://account.dyn.com/entrance/') do |page|
  puts page.title # Output: Create Dyn Account or Login

  # Submit the login form
  my_page = page.form_with(:action => '/entrance/') do |form|
    form.username = "<insert username here>"
    form.password = "<insert password here>"
  end.click_button

  puts my_page.title # Output: My Dyn Account

  # Click the logout link
  logout_page = agent.click(my_page.link_with(:text => /Log Out/))
  puts logout_page.title # Output: Thank you for using Dyn

end