Duplicate user account in multiple domain with samaccountname

Question

I have list of users in CSV file and I have 4 domain in my single forest.
I wanted to all users mentioned in CSV are also exist in other child domain or not..
if exist same account name then I need output..
I am trying below command but its not giving me required information from all domain:
Import-csv user.csv | foreach {get-aduser $_.samAccountName -properties SamAccountName | select name,SamAccountName}
Please help me or guide me to get duplicates account with same samaccountname

Answer 1

If I understand correctly, you're taking the users listed in user.csv and using Get-ADUser to see if the user exists.
If they do exist you would expect an ADUser object, and if they don't you would expect an ADIdentityNotFoundException.
That said, you're not capturing the output of Get-ADUser. I would add found users to an array and then once I've checked all the users in the CSV I would create all the accounts that are not in the array. Alternatively inside the foreach I would add users
that don't exist and then deal with the duplicates afterwards. Careful when running the script again, you'll find all the users will have duplicates!
Jason Warren
@jaspnwarren
jasonwarren.ca
habaneroconsulting.com/Insights