how to check a value is that null in powershell script

Question

I want to check the PasswordLastSet value of the user is that empty.

PS Z:\> Get-ADUser -Identity test1 -Properties * | select passwordlastset

passwordlastset
---------------

By if to judgment is that null.

this is my script

$password = Get-ADUser -Identity test1 -Properties * | select passwordlastset
 if ($password -ne $null){
    Write-Output "It's empty"
    }
else {
    Write-Output "It isn't empty"
   }

That always output "It's empty"

what should I do? How to change it?

Answer 1

Hi，
The $password is an object of type ADUser. You'd use the property $password.passwordlastset in the if condition and the comparison operator should be -eq. Select-Object returns not the specified property but an object that has only the specified property.

 $password = Get-ADUser -Identity test1 -Properties * | select passwordlastset  
  if ($password.passwordlastset -eq $null){  
     Write-Output "It's empty"  
     }  
 else {  
     Write-Output "It isn't empty"  
    }  

Best Regards,
Ian

============================================

If the Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.