Earlier this week I posted a fuction to get the installed software.
Naturally the next step is to compare installed software over multiple targets once you’ve got the results of that function.
So, here’s a function which utilizes the Get-InstalledSoftware function I posted earlier.
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function Compare-InstalledSoftware { param ( [parameter(mandatory=$true)][array]$ComputerName ) $AllInstalledSoftware = Get-InstalledSoftware -ComputerName $ComputerName $AllInstalledSoftwareNames = $AllInstalledSoftware | select -ExpandProperty 'Name' -Unique foreach ($Computer in $ComputerName) { $ComputerInstalledSoftware = $AllInstalledSoftware | Where-Object {$_.ComputerName -eq "$Computer"} | select -ExpandProperty 'Name' -Unique Compare-Object $AllInstalledSoftwareNames $ComputerInstalledSoftware | select -ExpandProperty InputObject -Unique | foreach { $Object = New-Object -TypeName PSObject $Object | Add-Member -MemberType NoteProperty -Name 'ComputerName' -Value $Computer $Object | Add-Member -MemberType NoteProperty -Name 'Name' -Value $_ $Object } } } |
But… Dave Wyatt made a good comment no my Get-InstalledSoftware post which made me revise that function.
So wouldn’t I need to also revise this Compare-InstalledSoftware function? No.
Since I’m rather consistent in my output (ComputerName & Name) it works in both cases. 🙂