top.rb

#!/usr/bin/env ruby

require 'net/http'

def get_server(site)
  Net::HTTP.start(site, 80) do |http|
    response = http.head('/')
    response['server']
  end
rescue Exception => e
  "[!] #{e.message}"
end

def get_csv
  `wget http://s3.amazonaws.com/alexa-static/top-1m.csv.zip && unzip top-1m.csv.zip`
end

sites = (ARGV.first || 20).to_i

get_csv unless File.exist?('top-1m.csv')

File.open('top-1m.csv') do |file|
  file.each_line do |line|
    site = line.gsub(/.*,/,'').chop
    print "[#{file.lineno}]. #{site} - "
    puts get_server(site)

    break if file.lineno == sites
  end
end

Cel mai popular server web intre primele n siteuri din primele 1M siteuri web (n dat in args)