Query AD for Operating system with PowerShell.

The following script is a modification of the one written by The Scripting Guy: http://www.microsoft.com/technet/scriptcenter/resources/qanda/nov06/hey1109.mspx. You will find a detailed explanation of the steps below at the link above.

It will also return the OS version to you. I put my modifications in green

$strCategory = "computer"

$objDomain = New-Object System.DirectoryServices.DirectoryEntry

$objSearcher = New-Object System.DirectoryServices.DirectorySearcher

$objSearcher.SearchRoot = $objDomain

$objSearcher.Filter = ("(objectCategory=$strCategory)")

$colProplist = "name", “operatingsystem”

foreach ($i in $colPropList){$objSearcher.PropertiesToLoad.Add($i)}

$colResults = $objSearcher.FindAll()

foreach ($objResult in $colResults)

{$objComputer = $objResult.Properties

$objComputer.name

$objComputer.operatingsystem

Write-host “ “

}