list-system-users.ps1

# see https://github.com/pkjaer/tridion-powershell-modules
# see https://gist.github.com/jhorsman/b218ba7e2e5587d21c395d5968583b61 to learn more about configuring the Tridion-CoreService module

# Install the Tridion-CoreService module from the Tridion-Powershell-Modules project
Install-Module -Name Tridion-CoreService
Import-Module -Name Tridion-CoreService

# Set the server configuration
Set-TridionCoreServiceSettings -Credential (Get-Credential) -CredentialType Windows
Set-TridionCoreServiceSettings -HostName my-cms-server -Version Web-8.5 -ConnectionType Basic-SSL

# Test configuration by listing the current user
Get-TridionUser -Current

#List all system/built-in/predefined users
$client = Get-TridionCoreServiceClient
$filter = New-Object Tridion.ContentManager.CoreService.Client.UsersFilterData;
$filter.IsPredefined = $true;
$client.GetSystemWideList($filter) | Select-Object Id, Title, Description, IsPredefined, IsEnabled