ups_tracker.rb

#!/usr/bin/env ruby

require 'nokogiri'
require 'open-uri'

UPS_URL = "http://wwwapps.ups.com/WebTracking/processRequest?AgreeToTermsAndConditions=yes&loc=en_US&tracknum="

if ARGV.empty?
  puts "Usage: ups_tracker tracking_number" and exit
end

tracking_number = ARGV.first

Nokogiri::HTML.parse(open(UPS_URL + tracking_number)).search("#showPackageProgress tr").each do |tr|
  args = tr.search("th, td").map {|s| s.content.gsub(/\t+/, '').gsub(/\n+/, '').squeeze.strip}
  puts sprintf("%-30s %-15s %-15s %-50s", *args)
end