download.rb

require "open-uri"

BASE_URL    = "http://lorempixel.com"
WIDTH       = 1920
HEIGHT      = 1080
CATEGORIES  = [ :abstract, :animals, :business, :cats, :city, :food, :nightlife,
               :fashion, :people, :nature, :sports, :technics, :transport ]

CATEGORIES.each do |category|
  url = [ BASE_URL, WIDTH, HEIGHT, category ].join "/"

  5.times do |n|
    filename = "Dummies/#{category}-#{WIDTH}x#{HEIGHT}_#{"%02d" % n}.jpg"

    puts "Downloading #{filename}..."

    open(url) do |connection|
      File.open(filename, "wb") { |file| file.puts connection.read }
    end
  end
end