訪問在管道的PowerShell

Question

的第一個對象我在PowerShell中創建了兩個功能，第一個功能函數得到一個註冊表項，如果存在，返回計算機名和boolan，第二個獲得安裝Windows更新的列表，如果一些更新存在驗證。 ...並返回計算機名和boolan allso .. 現在的問題是，我煥嘗試進入管道中我得到空的第一個對象...

Function Get-RegKey { 
<# 
.SYNOPSIS 
    "By OhadH 2012" 
.DESCRIPTION 
    Read Key From Registry and create it if not exist 
.PARAMETER LiteralPath 
.EXAMPLE 
    Get-RegKey -strMachine "127.0.0.1" -Location "Software\\MyKey" -strValue "Type" -strValueToSearch "Server" 
     Read The Registry key from "HKLM\Software\MyKey" the value Type and search for the value "Server" 
.EXAMPLE 
    Get-RegKey "127.0.0.1" "Software\\MyKey" "Type" "Server" 
     Read The Registry key from "HKLM\Software\MyKey" the value Type and search for the value "Server" 
     By Postion and not by value name 
.NOTES 
Author: OhadH 
Date: Feb 09, 2012  
#> 
    param (
     [parameter(Mandatory = $true,Position=0,ValueFromPipeline=$true)][String]$strMachine, 
     [parameter(Mandatory = $true,Position=1)][String]$Location, 
     [parameter(Mandatory = $true,Position=2)][String]$strValue, 
     [parameter(Mandatory = $true,Position=3)][String]$strValueToSearch 
     ) 
    begin { $obj = New-Object psobject } 
    process { 
     try { 
      $obj | Add-Member NoteProperty 'strMachine' $strMachine -Force 
      $reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $strMachine) 
      $regKey = $reg.OpenSubKey($Location,$true) 
      $RegRead = $regKey.GetValue($strValue) 
      if ($RegRead -eq $strValueToSearch) { $obj | Add-Member NoteProperty 'RegExist' $true -Force } 
       else { $obj | Add-Member NoteProperty 'RegExist' $false -Force } 
      } 
     catch [System.Exception] { $obj | Add-Member NoteProperty 'RegExist' "!!Error!!" -Force } 
    } 
    end { return $obj } 
} 

Function Set-RegKey { 
<# 
.SYNOPSIS 
    "By OhadH" 
.DESCRIPTION 
    Create Registry Key 
.PARAMETER LiteralPath 
.EXAMPLE 
    Set-RegKey -strMachine "127.0.0.1" -Location "Software\\MyKey" -strValue "Type" -strValueToSet "Server" 
     Read The Registry key from "HKLM\Software\MyKey" the value Type and search for the value "Server" 
.EXAMPLE 
    Get-RegKey "127.0.0.1" "Software\\MyKey" "Type" "Server" 
     Read The Registry key from "HKLM\Software\MyKey" the value Type and search for the value "Server" 
     By Postion and not by value name 
.NOTES 
Author: OhadH 
Date: Feb 09, 2012  
#> 
    param (
     [parameter(Mandatory = $true,Position=0,ValueFromPipeline=$true)][String]$strMachine, 
     [parameter(Mandatory = $true,Position=1)][String]$Location, 
     [parameter(Mandatory = $true,Position=2)][String]$strValue, 
     [parameter(Mandatory = $true,Position=3)][String]$strValueToSet 
     ) 
    begin { $obj = New-Object psobject } 
    process { 
     try { 
      $obj | Add-Member NoteProperty 'strMachine' $strMachine -Force 
      $reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $strMachine) 
      $reg.CreateSubKey($Location) | Out-Null 
      $regKey = $reg.OpenSubKey($Location,$true) 
      $regKey.SetValue($strValue,$strValueToSet,"String") 
      } 
     catch [System.Exception] { } 
    } 
    end { } 
} 

Function Get-WindowsUpdate { 
<# 
.SYNOPSIS 
    "By OhadH" 
.DESCRIPTION 
    Get specific Installed KB 
.PARAMETER LiteralPath 
.EXAMPLE 
    Get-WindowsUpdate -strMachine 127.0.0.1 -strUpdate "KB2633952" 
     Get if KB2633952* installed on local machine 
.EXAMPLE 
    Get-WindowsUpdate 127.0.0.1 "KB2633952" 
     Get if KB2633952* installed on local machine 
.NOTES 
Author: OhadH 
Date: Feb 09, 2012  
#> 
    param (
    [parameter(Mandatory = $true,Position=0,ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)][String]$strMachine, 
    [parameter(Mandatory = $true,Position=1,ValueFromPipeline=$true)][String]$strUpdate 
    ) 
    begin { $obj = New-Object psobject } 
    process { 
      try { 
       $obj | Add-Member NoteProperty 'strMachine' $strMachine -Force 
       if ((gwmi -ComputerName $strMachine Win32_QuickFixEngineering | ? {$_.HotFixID -like $strUpdate+"*"}) -ne $null) 
        { $obj | Add-Member NoteProperty 'KBInstalled' $true -Force } 
       else { $obj | Add-Member NoteProperty 'KBInstalled' $false -Force }   
      } 
      catch [System.Exception] { $obj | Add-Member NoteProperty 'KBInstalled' "!!Error!!" -Force }   
    } 
    end { return $obj } 
} 

$subnet = '10.0.0.' 
for ($i=1; $i -le 250; $i++) { 
$cntIP = $subnet + $i 
if ($cntIP = ($cntIP | Ping-Host -icmp | where { $_.Responding }).IPAddress) { 
    Set-RegKey -strMachine $cntIP "SOFTWARE\\MyKey" -strValue "Type" -strValueToSet "Server" 
    Get-RegKey -strMachine $cntIP "SOFTWARE\\MyKey" -strValue "Type" -strValueToSearch "Server" | Get-WindowsUpdate -strUpdate "KB2633952" | select strMachine,**@{N="RegExist";E={$_.RegExist}},**KBInstalled 
} 
} 

感謝您的幫助轄

Answer 1

如果我遵循，您需要將Get-RegKey傳遞給Foreach-Object，並在foreach中保存對所需對象的引用。如果你有一個由三個命令組成的管道（例如get-something | do-something | set-something），那麼管道中的第三個cmdlet（例如set-something）不能從上游cmdlet訪問對象（例如get-something ）。