Scope Variable usage

PowerShell Help
1

I have this script that places a variable to adjust for PS 2.0 but as my DCs are all higher, wanted to try it with a Remote Variable ($Using:<VariableName>)

I read this: about Remote Variables - PowerShell | Microsoft Docs

…but not seeing how to adapt for my particular script.

Current script:

$DCs = [DirectoryServices.ActiveDirectory.Forest]::GetCurrentForest() |
    Select-Object -ExpandProperty Sites |
        Select-Object -ExpandProperty Servers |
            Select-Object -ExpandProperty Name

Invoke-Command -ComputerName $DCs {
    $Patches = 'KB4586793', 'KB4580422', 'KB4587735' #Server 2016
    Get-HotFix -Id $Patches
}		 -ErrorAction SilentlyContinue -ErrorVariable Problem
foreach ($p in $Problem) {
    if ($p.origininfo.pscomputername) {
        Write-Warning -Message "Patch not found on $($p.origininfo.pscomputername)"
    }
    elseif ($p.targetobject) {
        Write-Warning -Message "Unable to connect to $($p.targetobject)"
    }
}

How would I adapt this:

$ps = "*PowerShell*"
Invoke-Command -ComputerName S1 -ScriptBlock {
  Get-WinEvent -LogName $Using:ps
}

…into my code, pulling the "$Patches = " line out of the Invoke-Command?

Would it be:
$Patches = “‘KB4586793’, ‘KB4580422’, ‘KB4587735’”

then, under Invoke-Command:

Get-HotFix -Id $Using:Patches

2

Yes, if it is not contained in the scriptblock, then you need to use the Using keyword to reference the variable outside of the scriptblock.

3

Very cool…running…thank you for confirming usage here.

Hasn’t finished but will let it go for awhile against those 3 Patches.