run a command on a windows box via winrm

winrm.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'winrm'

HOST=ARGV[0]
PASSWORD=ARGV[1]
COMMAND=ARGV[2] # 'hostname'

begin
  winrm = WinRM::WinRMWebService.new( "http://#{HOST}:5985/wsman",
    :plaintext, 
    :user => "Administrator", :pass => PASSWORD,
    :basic_auth_only => true)
  winrm.cmd(COMMAND) do |stdout, stderr|
    puts "#{HOST} -- #{stdout}" if stdout
    puts "#{HOST} ERROR: #{stderr}" if stderr
  end
rescue
  puts "A low level error occured with #{HOST}"
end