Copy global group members to local groups

Question

I have an AD environment with a lot of global groups, all named G-FG-groupname and I would like to move (or copy) the members of these groups to already existing domain local groups with a similar groupname but
with another prefix which is L-RG-groupname.
Example, in which Testn can be replaced by any name.
Members of domain global group G-FG-Test1 have to be moved or copied to domain local group L-RG-Test1
Members of domain global group G-FG-Test2 have to be moved or copied to domain local group L-RG-Test2
Members of domain global group G-FG-Test3 have to be moved or copied to domain local group L-RG-Test3
etc..
Many thanks!

Answer 1

Hi Hoffer,
as Mike already said, use the Searchbase parameter. Here's an example how it could look like in the previous script:
# Import Module
Import-Module ActiveDirectory
# Get old Groups
$GroupsOld = Get-ADGroup -Filter { name -like "G-FG-*" } -Properties Members -SearchBase "OU=OU TestOU,DC=intra,DC=netzwerker,DC=de"
# Then for each group do ...
foreach ($GroupOld in $GroupsOld)
# Get the name of the new group
$NewName = "L-RG-" + $GroupOld.Name.SubString(5)
# Add Group Members
Add-ADGroupMember -Identity $NewName -Members $GroupOld.Members -ErrorAction 'SilentlyContinue'
# Remove Members from old group
Remove-ADGroupMember -Identity $GroupOld -Members $GroupOld.Members -Confirm:$false
Basically, use the Distinguished name of an Organizational Unit as the searchbase parameter.
If you want to know the Distinguished Name of a given OU, you can either use the AD Console, or use this command (change the name as necessary):
Get-ADOrganizationalUnit -filter { name -eq "OU TestOU" } | Select -ExpandProperty DistinguishedName
Cheers,
Fred
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