在遞歸PowerShell腳本中傳遞參數

Question

我有一個遞歸Powershell腳本來調用自身的高架構。我想將父進程的PID作爲參數發送給子進程。現在我正在嘗試一些這樣的事情，但它不起作用。

param($someid) 

$myWindowsID = [System.Security.Principal.WindowsIdentity]::GetCurrent() 
$myWindowsPrincipal = New-Object System.Security.Principal.WindowsPrincipal($myWindowsID) 

# Get the security principal for the Administrator role 
$adminRole = [System.Security.Principal.WindowsBuiltInRole]::Administrator 

# Check to see if we are currently running "as Administrator" 
if ($myWindowsPrincipal.IsInRole($adminRole)) 
{ 
    Write-Host $PID 
    "Child process" 
    #Write-Host $someid 

    # We are running "as Administrator" - so change the title and background color to indicate this 
    $Host.UI.RawUI.WindowTitle = $myInvocation.MyCommand.Definition + "(Elevated)" 
    $Host.UI.RawUI.BackgroundColor = "DarkBlue" 
    Clear-Host 
} 
else 
{ 
    "Parent process" 
    Write-Host $PID 

    # We are not running "as Administrator" - so relaunch as administrator 
    # Create a new process object that starts PowerShell 
    $newProcess = New-Object System.Diagnostics.ProcessStartInfo "PowerShell"; 

    # Specify the current script path and name as a parameter 
    $newProcess.Arguments = $myInvocation.MyCommand.Definition; 
    #$newProcess.Arguments = $PID; 

    # Indicate that the process should be elevated 
    $newProcess.Verb = "runas"; 

    # Start the new process 
    [int]$arg = $PID 
    [System.Diagnostics.Process]::Start($newProcess); 

    # Exit from the current, unelevated, process 

    Exit 
} 

Answer 1

子進程可以找到它的ParentProcessID從WMI（使用Get-WmiObject，別名gwmi）：

gwmi win32_process | select ProcessID, ParentProcessID, Name | where {$_.ProcessID -eq "$pid"} | ft -AutoSize 

，我可能把它分配給一個變量重用後來在腳本中。

$PPI = (gwmi win32_process | select ProcessID, ParentProcessID, Name | where {$_.ProcessID -eq "$pid"} | Select-Object ParentProcessID).ParentProcessID 

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