List of AD groups and username of users within a specific OU in PowerShell

Was wondering if you could help me with script.

This script would search a specific OU (let's say Disabled Users OU) and display all the AD groups all users are part of, the output to a CSV file showing Usernames and AD group names.

I have got a command that will display all AD groups of a user but I have to keep changing the username:

Get-ADPrincipalGroupMembership username_withoutdomain | select name

I have a script that requires the username entered and will display the AD group membership.

do { 
  write-host -NoNewline "Type username: "
  $user = read-host

  if ($user -eq "") { break }

  (get-aduser $user -Properties memberof).memberof |
    get-adgroup                                    |
    select -exp name
} while ($true) 

I also know it is possible to do this via command prompt:

net userusername

Thanks for all assistance.

You can query all users under an OU by using the -SearchBase parameter, from there you can enumerate each user and then enumerate each group the user is a memberOf to generate your report:

$base = 'OU=disabledUsers,DC=domain,DC=com'
Get-ADUser -Filter * -SearchBase $base -Properties memberOf |
    ForEach-Object {
        foreach($group in $_.memberOf) {
            [pscustomobject]@{
                User           = $_.Name
                SamAccountName = $_.SamAccountName
                MemberOf       = $group -replace '^CN=|(?<!\\),.+'
            }
        }
    } | Export-Csv path\to\report.csv -NoTypeInformation