gistfile1.ps1

#Retrieve a Userdata file.
function GetUserDataFile($DestinationPath)
{
   $WebClient = (New-Object Net.WebClient)
   $WebClient.DownloadFile("http://169.254.169.254/latest/user-data/", $DestinationPath)
}

$workingDir = "C:\Windows\System32\GroupPolicy\Machine\Scripts\Startup"

#Get the userdata file into the working directory.
$userDataFileName = $workingDir + "\init.ps1"
GetUserDataFile $userDataFileName

cd $workingDir
.\init.ps1