laptop_inventory.rb

#!/usr/bin/ruby
require "uri"
require "net/http"
require "readline"

$cache = {}
def cached_exec(cmd)
  if not $cache.include?(cmd)
    $cache[cmd] = `#{cmd}`.split("\n")
  end
  $cache[cmd]
end

def software_version()
  result = cached_exec("sw_vers")
  result.map { |line| line.split(":")[1].strip }.join(" ")
end

def system_profile(category, name)
  cached_exec("system_profiler #{category}").grep(Regexp.new(Regexp.escape(name)))[0].split(": ")[1]
end

def users()
  cached_exec("ls /Users").select { |u| u !~ /Guest/ and u !~ /Shared/ }
end

uri = URI("https://script.google.com/macros/s/AKfycbz65iB51W5lDYrpxT89trMkeBF8M2RdqkBq4J8PuftwbMp-eSs/exec")
data = {
  :name => Readline.readline("What is your first name? "),
  :software_version => software_version(),
  :model_id => system_profile("SPHardwareDataType", "Model Identifier"),
  :serial_number => system_profile("SPHardwareDataType", "Serial Number (system)"),
  :processor_name => system_profile("SPHardwareDataType", "Processor Name"),
  :processor_speed => system_profile("SPHardwareDataType", "Processor Speed"),
  :processor_cores => system_profile("SPHardwareDataType", "Total Number of Cores"),
  :memory => system_profile("SPHardwareDataType", "Memory"),
  :hardware_uuid => system_profile("SPHardwareDataType", "Hardware UUID"),
  :boot_rom_version => system_profile("SPHardwareDataType", "Boot ROM Version"),
  :smc_version => system_profile("SPHardwareDataType", "SMC Version (system)"),
  :local_time => Time.now(),
  :users => users().join(";"),
  :storage_capacity => system_profile("SPStorageDataType", "Capacity")
}
uri.query = URI.encode_www_form(data)

res = Net::HTTP.get_response(uri)
if not res.is_a?(Net::HTTPSuccess)
  puts "Sending inventory data failed :("
else
  puts "Thank you for submitting your laptop to the inventory!"
end