Since its the new year, and everyone is updating their RGS holiday lists, I thought I would contribute with a quick one-liner to help all those who want to quickly view which RGS groups have what holiday lists (you would think Microsoft would make that easier for you).
$Workflows = get-CsRGSWorkflow $Holidays = @() foreach($Workflow in $Workflows){ $List = @($Workflow.HolidaySetIDList) $S = "" if ($List){ $S = [string]::Join(", ",($List |%{$Holiday = $_;Get-CsRgsHolidaySet -ShowAll|?{$_.Identity -match $Holiday.InstanceId}}).Name) } $Workflow |Add-Member "HolidaySet" $S $Holidays += $Workflow |Select-Object Name,LineURI,Language,TimeZone,HolidaySet } return $Holidays