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Although all the online documentation and examples state there should be an OperatingSystem property for the results of Get-ADComputer I don't have one on my Win Server 2008 R2.

Here is all I have on Get-ADComputer:

PS I:\> Get-ADComputer -filter{name -eq "sit-selpa"} | Get-Member

   TypeName: Microsoft.ActiveDirectory.Management.ADComputer

Name              MemberType            Definition
----              ----------            ----------
Contains          Method                bool Contains(string propertyName)
Equals            Method                bool Equals(System.Object obj)
GetEnumerator     Method                System.Collections.IDictionaryEnumer...
GetHashCode       Method                int GetHashCode()
GetType           Method                type GetType()
ToString          Method                string ToString()
Item              ParameterizedProperty Microsoft.ActiveDirectory.Management...
DistinguishedName Property              System.String DistinguishedName {get...
DNSHostName       Property              System.String DNSHostName {get;set;}
Enabled           Property              System.Boolean Enabled {get;set;}
Name              Property              System.String Name {get;}
ObjectClass       Property              System.String ObjectClass {get;set;}
ObjectGUID        Property              System.Nullable`1[[System.Guid, msco...
SamAccountName    Property              System.String SamAccountName {get;set;}
SID               Property              System.Security.Principal.SecurityId...
UserPrincipalName Property              System.String UserPrincipalName {get...

sit-selpa is the Server 2008 R2 server I'm running this on, the localhost.

Why are there only 9 properties? I've searched online but I can't seem to find anyone else with this experience.

share|improve this question
up vote 4 down vote accepted

Your Get-AdComputer is only using the default properties for the object. Use the -Properties * to grab them all:

 Get-ADComputer -filter {name -eq "sit-selpa"} -Property * | Get-Member

And then, to just get OperatingSystem:

Get-ADComputer -filter {name -eq "sit-selpa"} -Property * | Select-Object OperatingSystem

However, you're not required to grab all the object properties using a wildcard. You may specify the additional properties explicitly:

Get-ADComputer -Identity sit-selpa -Properties OperatingSystem
Get-ADComputer -Identity sit-selpa -Properties OperatingSystem, OperatingSystemVersion
share|improve this answer
This is exactly what I was looking for! Thanks! It's amazing I couldn't easily find an answer on Google. Now that you let me know about -Properties * I do see it in use, but never with an explanation. Now there will be one. :) – Matt Penner Apr 15 '11 at 16:00
@Matt Check out the Get-Help in combo with -detailed or -full. It can be used to get the gory details on most everything. Get-Help Get-ADComputer -full | more then look for the Properties section. – jscott Apr 15 '11 at 16:10

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