test-vsphere.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'pp'
require 'fog'
require 'highline/import'

def get_password(prompt="Enter password:")
   ask(prompt) {|q| q.echo = false}
end

#user = gets.chomp
pass = get_password()

credentials = {
    :provider	=> "vsphere",
    :vsphere_username	=> "user.name",
    :vsphere_password	=> pass,
    :vsphere_server	=> "my_vcserver",
    :vsphere_ssl	=> true,
    :vsphere_expected_pubkey_hash	=> "my_hash",
    :vsphere_rev	=> "4.0"
}
connection = Fog::Compute.new(credentials)

# MUST BE Ruby v 1.9 to use this hash style
vms = connection.list_virtual_machines(datacenter: 'my_dc', folder: 'my_folder')
pp vms