List Details of AD-joined Servers

Hello again,

I had a task recently to install an update on a number of AD domain-joined servers. I had to make sure that no server was missed.

In my case checking that all servers are at a given build number was sufficient.

Here is the one-liner that will display this information:

$arrServers = @(); Get-ADComputer -Filter * -Properties OperatingSystem | ?{$_.OperatingSystem -match "Server"} | sort Name | ForEach-Object {$Name = $_.Name; $OS = $_.OperatingSystem; $Version = $null; $Build = $null; $osDetails = $null; $osDetails = Invoke-Command -ComputerName $Name -ScriptBlock {Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion"}; if ($osDetails.CurrentMajorVersionNumber) {$Version = $osDetails.ReleaseId; $build = $osDetails.CurrentMajorVersionNumber.ToString() + "." + $osDetails.CurrentMinorVersionNumber.ToString() + "." + $osDetails.CurrentBuildNumber.ToString() + "." + $osDetails.UBR.ToString()}; $arrServers += New-Object -TypeName PSObject -Property @{Name = $Name; OS = $OS; Version = $Version; Build = $Build}}; $arrServers | ft

Open PowerShell as Administrator and simply paste the script.

To be noted that it does no error handling except for checking for the existence of the CurrentMajorVersionNumber value of the "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" Registry key as a rudimentary means to filter out old operating systems. If you'd like something more sophisticated then you'll want it turned  into a proper script with all the bells and whistles.

However, for a one-off quick check it does the job.

Sample output:

Have a great scripting day!