Powershell Exclude Multiple OUs

Question

I need to be able to exclude multiple OUs when searching for Active Users in Powershell. The list of OUs is stored in a data table which can be updated when new OUs need excluding. I can't think of a way of excluding these OUs dynamically, ie not requiring to update the script in order to add a new

(`$_.distinguishedname -notlike "*OU1*")

for each OU.

I've been attempting this for a good few hours now with no joy. I've even tried creating the filter by looping through the data table, such as

$ToReturn = "(`$_.distinguishedname -notlike ""*$Row[0]*"")" 

and then add

$ToReturn = $ToReturn + " -and (`$_.distinguishedname -notlike ""*$Row[0]*"")"

for subsequent exclusions however it ignores the variable.

UPDATE 1: Code to return users::

$users = Get-ADUser -SearchBase $SourceOu -Server $Domain -Filter {
        whenCreated -lt $DisableDate
        -and PasswordNeverExpires -eq $False
        }|? {$ExludedOUs} 

Where $ExcludedOUs is, I need a way of dynamically adding an equivalent of ($_.distinguishedname -notlike " OU1 ") for each Exclusion in the datatable.

Many thanks in advance!

Lewis

Answer 1

You could use -notmatch and join your exclusions with | regex operator:

$OURegex = $ExcludedOUs -Join '|'
$users = Get-ADUser -SearchBase $SourceOu -Server $Domain -Filter {
    whenCreated -lt $DisableDate
    -and PasswordNeverExpires -eq $False
    } | Where-Object {$_.DistinguishedName -notmatch $OURegex}