Download the imgur.com images from reddpics.com; Great for wallpapers/screensavers

earthporn.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'mechanize'

def download path, site
  url = "http://reddpics.com/moreimages/#{site}/#{path}"
  agent = Mechanize.new
  page = agent.get url
  page.links_with(:href => /i.imgur.com/).map(&:href).uniq.each do |img|
    uri = URI.parse img
    file = "." + uri.path
    if File.exists? file
      puts "#{file} exists"
    else
      puts "Downloading #{img}"
      `wget #{img}`
    end
  end

  page
end

path = '10'

count = (ARGV.shift || 1).to_i
site  = (ARGV.shift || 'earthporn')

count.times do
  page  = download path, site
  li    = page.search(".//li").first
  path = li.attributes['after'].value
end

Usage: ./earthporn.rb

Num pages defaults to 1; subreddit defaults to earthporn.