google_suggest.rb

# encoding: utf-8
require 'json'
require 'open-uri'
require 'nkf'
require 'cgi'

url_pattern = 'http://clients1.google.co.jp/complete/search?client=hp&hl=ja&q=%s'

content = NKF.nkf('-w', open(url_pattern % CGI.escape(ARGV.shift)).read)
content.sub!(/^[^\(]+\((.+)\)$/, '\1')
data = JSON.parse(content)
data.shift
data = data[0].map do |d|
  d[0]
end

puts data.join("\n")