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錯誤：語法無效。預設選項不允許超過“2”次

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錯誤：語法無效。預設選項不允許超過“2”次

我正在嘗試運行下面的 powershell 腳本來識別連接到電腦的 USB 或 SCSI 介面類型，如果我不使用IF和-Or運算符，該腳本可以正常工作

if(($diskdrive = (gwmi win32_diskdrive | ?{$_.interfacetype -eq 'USB'})) -Or ($diskdrive =(gwmi win32_diskdrive | ?{$_.interfacetype -eq 'SCSI'}))){
$letters = $diskdrive | %{gwmi -Query "ASSOCIATORS OF 
{Win32_DiskDrive.DeviceID=`"$($_.DeviceID.replace('\','\\'))`"} WHERE

AssocClass = Win32_DiskDriveToDiskPartition"} |  %{gwmi -Query "ASSOCIATORS

OF {Win32_DiskPartition.DeviceID=`"$($_.DeviceID)`"} WHERE AssocClass =

Win32_LogicalDiskToPartition"} | %{$_.Deviceid}
setx OSDUSBDrive $letters /M 
Write-Output $diskdrive, $letters}
Start-Sleep -s 5


    if (-not ("Win32.NativeMethods" -as [Type]))
    {
        # import sendmessagetimeout from win32
    Add-Type -Namespace Win32 -Name NativeMethods -MemberDefinition @"
    [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
    public static extern IntPtr SendMessageTimeout(
        IntPtr hWnd, uint Msg, UIntPtr wParam, string lParam,
        uint fuFlags, uint uTimeout, out UIntPtr lpdwResult);
"@
    }

    $HWND_BROADCAST = [IntPtr] 0xffff;
    $WM_SETTINGCHANGE = 0x1a;
    $result = [UIntPtr]::Zero

    # notify all windows of environment block change
    [Win32.Nativemethods]::SendMessageTimeout($HWND_BROADCAST, $WM_SETTINGCHANGE, [UIntPtr]::Zero, "Environment", 2, 5000, [ref] $result);

Start-Sleep -s 5

錯誤：語法無效。預設選項不允許超過“2”次。 C:\temp\AddOSDUSBDrive_NEW.ps1:10 : 1 + setx OSDUSBDrive $字母 /M + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : 未指定: (Erreurÿ: 文法...加上de 2 fois.:String) [], RemoteException + FullQualifiedErrorId : NativeCommandError Entrez "SETX /?"附註語法。

任何想法？

答案1

使用setx OSDUSBDrive "$letters" /M

應用SETX.exe句法圖案

SETX [/s Computer [Credentials]] Variable Value [/m]
                                          ↑↑↑↑↑

如果$letters如果包含更多字母例如F:, G:,H:

 setx OSDUSBDrive $letters /M
 #                ↑↑↑↑↑↑↑↑        this evaluates to
 setx OSDUSBDrive F: G: H: /M
 #                ↑↑ ↑↑ ↑↑        three space-separated values (WRONG)

調整後（見語法：轉義字元、分隔符號和引號）：

 setx OSDUSBDrive "$letters" /M
 #                ↑↑↑↑↑↑↑↑↑↑       this evaluates to
 setx OSDUSBDrive "F: G: H:" /M
 #                 ↑↑↑↑↑↑↑↑        one string value (quotes = escape characters)

而且，我將第一個調整IF如下：

if ( $diskdrive = ( Get-WmiObject win32_diskdrive | 
        Where-Object { $_.interfacetype -in ('USB','SCSI') } ) ) {

解釋:-or運算子表示邏輯或：TRUE當任一即，如果第一個操作數的計算結果為TRUE，則其他操作數永遠不會被計算。

例如，運行

Remove-Variable a, b -ErrorAction SilentlyContinue
if ( ($a = 1) -or ($b = 3) ) { Write-host "a=$a b=$b" }

無法檢索變數“$b”，因為尚未設定它。

if ( ($a = $null) -or ($b = 3) ) { Write-host "a=$a b=$b" }

a = b = 3

答案2

我實際上按照你的建議添加了這個：

if ( $diskdrive = ( Get-WmiObject win32_diskdrive |Where-Object { $_.interfacetype -in ('USB','SCSI') } ) ) {

當我手動執行該腳本時，該腳本工作正常，但是當從 SCCM 呼叫它時，我收到以下錯誤

您必須在“-”運算符的右側提供值表達式。 TaskSequencePSHost 3/6/2018 4:36:37 PM 0 (0x0000) 在 D:\SMS\PKG\SE1001B5\AddOSDUSBDrive_NEW.ps1:2 char:42 +Where-Object { $_.interfacetype - <<< in ( 'USB','SCSI') } ) ){ TaskSequencePSHost 3/6/2018 4:36:37 PM 0 (0x0000) ParserError: (:) [], ParseException TaskSequencePSHost 3/6/2018 4:36:33 PM 06: (0x0000) TSHOST：腳本已完成，回傳代碼為0 TaskSequencePSHost 3/6/2018 4:36:37 PM 0 (0x0000)

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