GP logon script with PowerShell

We have a Windows Server 2012 domain and would like to create a GP logon script with PowerShell.

So if you execute the .ps1 file, the specified logon script settings (including parameters) would be applied automatically in the GP.

Any idea of such command line?

Please answer here: http://social.technet.microsoft.com/Forums/en/winserverpowershell/thread/ad1dc3cb-2d3c-49d9-b483-8c36c11374cc#7d9e0aa4-e3aa-44f0-9b3d-07275f7bb29a