Question

我是PowerShell的新手，我正在尝试使用脚本来列出我的并行端口。我从here获取了PowerShell脚本：

On Error Resume Next

strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")

Set colItems = objWMIService.ExecQuery("Select * from Win32_ParallelPort")

For Each objItem in colItems
    Wscript.Echo "Availability: " & objItem.Availability
    For Each strCapability in objItem.Capabilities
        Wscript.Echo "Capability: " & strCapability
    Next
    Wscript.Echo "Description: " & objItem.Description
    Wscript.Echo "Device ID: " & objItem.DeviceID
    Wscript.Echo "Name: " & objItem.Name
    Wscript.Echo "OS Auto Discovered: " & objItem.OSAutoDiscovered
    Wscript.Echo "PNP Device ID: " & objItem.PNPDeviceID
    Wscript.Echo "Protocol Supported: " & objItem.ProtocolSupported
Next

执行脚本后我得到了：

PS C:\> .\script.ps1
Unexpected token '_' in expression or statement.
At C:\script.ps1:4 char:44
+ Set objWMIService = GetObject("winmgmts:" _ <<<<
    + CategoryInfo          : ParserError: (_:String) [], ParseException
    + FullyQualifiedErrorId : UnexpectedToken

我甚至尝试按&更改$，因为我在this脚本中看到的也不起作用。我的PowerShell有问题，还是造成问题的脚本？

PS：我在Windows XP 32位中使用PowerShell v2.0

提前谢谢！

修改

根据答案，它不是PowerShell脚本，而是vbscript。所以我现在的问题是，如果它确实是一个PowerShell脚本，这个脚本不起作用的原因：

$strComputer = "." 

$colItems = get-wmiobject -class "Win32_ParallelPort" -namespace "root\CIMV2" ` 
-computername $strComputer 

foreach ($objItem in $colItems) { 
      write-host "Availability: " $objItem.Availability 
      write-host "Capabilities: " $objItem.Capabilities 
      write-host "Capability Descriptions: " $objItem.CapabilityDescriptions 
      write-host "Caption: " $objItem.Caption 
      write-host "Configuration Manager Error Code: " $objItem.ConfigManagerErrorCode 
      write-host "Configuration Manager User Configuration: " $objItem.ConfigManagerUserConfig 
      write-host "Creation Class Name: " $objItem.CreationClassName 
      write-host "Description: " $objItem.Description 
      write-host "Device ID: " $objItem.DeviceID 
      write-host "DMA Support: " $objItem.DMASupport 
      write-host "Error Cleared: " $objItem.ErrorCleared 
      write-host "Error Description: " $objItem.ErrorDescription 
      write-host "Installation Date: " $objItem.InstallDate 
      write-host "Last Error Code: " $objItem.LastErrorCode 
      write-host "Maximum Number Controlled: " $objItem.MaxNumberControlled 
      write-host "Name: " $objItem.Name 
      write-host "Operating System Auto-Discovered: " $objItem.OSAutoDiscovered 
      write-host "PNP DeviceID: " $objItem.PNPDeviceID 
      write-host "Powe rManagement Capabilities: " $objItem.PowerManagementCapabilities 
      write-host "Power Management Supported: " $objItem.PowerManagementSupported 
      write-host "ProtocolS upported: " $objItem.ProtocolSupported 
      write-host "Status: " $objItem.Status 
      write-host "Status Information: " $objItem.StatusInfo 
      write-host "System Creation Class Name: " $objItem.SystemCreationClassName 
      write-host "System Name: " $objItem.SystemName 
      write-host "Time Of Last Reset: " $objItem.TimeOfLastReset 
      write-host 
}

我收到此错误：

Missing expression after unary operator '-'.
At C:\script.ps1:4 char:2
+ - <<<< computername $strComputer
    + CategoryInfo          : ParserError: (-:String) [], ParseException
    + FullyQualifiedErrorId : MissingExpressionAfterOperator

Answer 1

在修改过的脚本中，第3行的反引号后面有一个空格，因此无法识别延续。在PowerShell中使用反引号进行续行时，it can't be followed by a whitespace character。消除那个空间，或者将它全部排成一行：

$colItems = get-wmiobject -class "Win32_ParallelPort" -namespace "root\CIMV2" -computername $strComputer

Answer 2

您的示例脚本不是PowerShell，而是vbscript。

PowerShell要简单得多，你会使用类似的东西：

Get-WmiObject Win32_ParallelPort

为什么我收到PowerShell解析错误？

2 个答案: