PowerShell for Windows patch apply

gistfile1.ps1

$patches = get-item $foldername
$process = new-object System.Diagnostics.Process
foreach($patch in $patches){
  if($PSVersionTable.PSVersion.Major -ge 4) {
    unblock-file $patch
  }
  if([string]::compare($patch.extension, ".exe", $true) -eq 0) {
    $process.StartInfo.Arguments = "/passive /norestart"
    $process.StartInfo.FileName = $patch.fullname
  }else if([string]::compare($patch.extension, ".msu", $true) -eq 0) {
    $process.StartInfo.Arguments = $patch.fullname + " /quiet /norestart"
    $process.StartInfo.FileName = "wusa.exe"
  } else {
    continue
  }
  $process.Start()
  $process.WaitForExit()
}