foreach filtering out members already apart of group

Question

$GetGroupsFromUser = Get-ADPrincipalGroupMembership $WPFnamelookupbox.Text |
                     Where-Object { $_.Name -like \'G1*\' }
$Groups = Get-ADGroup -Filter {N         


        

Answer 1

You could use Compare-Object:

$GetGroupsFromUser = Get-ADPrincipalGroupMembership $WPFnamelookupbox.Text | Where-Object {$_.name -like 'G1*' }
$Groups = Get-ADGroup -Filter "name -like 'G1*'"
Compare-Object $Groups $GetGroupsFromUser | Where-Object {$_.SideIndicator -eq "<="}