远程使用Gpupdate（Hash，哈希）

function Start-GPUpdate

{

    param

    (

        [String[]]

        $ComputerName

    )

    $code = {    

        $rv = 1 | Select-Object -Property ComputerName, ExitCode

        $null = gpupdate.exe /force

        $rv.Exitcode = $LASTEXITCODE

        $rv.ComputerName = $env:COMPUTERNAME

        $rv 

    }

    Invoke-Command -ScriptBlock $code -ComputerName $ComputerName |

      Select-Object -Property ComputerName, ExitCode

}

From： http://www.pstips.net/gpupdate-on-remote-machines.html