Use PowerShell to Change Sign-in Script and Profile Path

Summary : Microsoft Scripting Guy, Ed Wilson, talks about using Windows PowerShell to modify the sign-in script and profile path in Active Directory.
Hey, Scripting Guy! We are in the middle of an Active Directory migration (primarily moving our client computers from Windows XP to Windows 8). We are also consolidating our file servers and our profile servers. We have multiple sites, and in the past, each site had a one or more domain controllers, multiple file and print servers, and other stuff as needed.
Now, we are collapsing that infrastructure into a single server running Hyper-V. Needless to say, our profiles will be moving to different servers, and we will also be changing our sign-in scripts. So I need an easy way to modify these settings for our users. The new servers will be based on the user’s city locations. Can you help?
—RA
Hello RA,
Microsoft Scripting Guy, Ed Wilson, is here. Things have been busy around the Scripting House. I got up early to check the scripter@microsoft.com email and to write a couple of proposals for Windows PowerShell Saturday in Atlanta . According to Mark, I will be making two presentations—one for the beginner track and one for the advanced track. In addition, I have been working on my presentation that I will be conducting remotely for Windows PowerShell Saturday in Singapore .
Find the attribute names
The first thing we need to do is to find the ADSI attribute names for the profile path and for the sign-in script. I open up one of the user profiles and type some bogus information so that I can find the attributes in ADSI Edit. Here is the page from Active Directory Users and Computers:

Now I navigate to the same user object in ADSI Edit and look up the ADSI property names. The names make sense: ProfilePath and ScriptPath. This is shown here:

Get the information from AD DS
Now I need to retrieve the information from Active Directory Domain Services (AD DS). I could do all this from inside the Windows PowerShell console, but I decided to use the Windows PowerShell ISE instead. It has better intellisense, and for something like this, it makes things a bit more readable. I decide to use a couple of variables to hold the organizational unit (OU) and the properties that I need to retrieve. I then use Get-ADUser to retrieve the information. Here is this portion of the script:
Import-Module ActiveDirectory
$ou = "OU=Testou,Dc=Iammred,Dc=Net"
$properties = "ProfilePath...(read more)