flickr_set_downloader.rb

# Downloads all the photos from a flickr set

require 'open-uri'

require 'rubygems'
require 'flickr-rest' # benschwarz-flickr-rest

Flickr::Query::API_KEY = 'your key, yo.'

Flickr::Query.new('57794886@N00').
  execute('flickr.photosets.getPhotos', :photoset_id => '72157609406563810').search('photo').each do |photo|
  unless File.exist?(filename = "/tmp/#{photo['id']}.jpg")
    open(filename, "w+") do |f|
      f.write open("http://farm#{photo['farm']}.static.flickr.com/#{photo['server']}/#{photo['id']}_#{photo['secret']}_o.jpg").read
    end
  end
end