function time {
  Param(
      [Parameter(Mandatory=$true)]
      [string]$command,
      [switch]$quiet = $false
  )
  $start = Get-Date
  try {
      if ( -not $quiet ) {
          iex $command | Write-Host
      } else {
          iex $command > $null
      }
  } finally {
      $(Get-Date) - $start
  }
}