gistfile1.rbx

require 'nokogiri'
require 'open-uri'

###
# Get the number of gem downloads
# Usage: script.rb <gem_name>
#
# ruby script.rb nokogiri # => 1189
#
doc = Nokogiri::HTML(open('http://gems.rubyforge.org/stats.html'))
puts Hash[*doc.xpath('//td[a[@name]]').map { |node|
  [node.text, node.next_sibling.text.to_i]
}.flatten][ARGV[0]]