Without sorting the list, the results are not necessarily going to be accurate. This is because the Get-Unique cmdlet compares each item in a sorted list to the next item to eliminate duplicates. Unfortunately, there is no guarantee that the results will be accurate. Get-Process | Get-Unique | Measure-Object Sort the list of objects For example, the following code that returns the number of unique processes running on a computer appears to work just fine. It is important to keep in mind how the Get-Unique cmdlet works, or else it can return misleading results.
It dawned on me that I have not written very much about the Get-Unique cmdlet. Using the Get-Unique cmdletĪnyway, as part of my work for the 2012 Scripting Games, I have been looking over cmdlets, examining the Help files, and in general reviewing the Windows PowerShell fundamentals. The Scripting Games are the best opportunity to learn Windows PowerShell. Also think about the following help to ramp up for this year’s games: If you are thinking about the 2012 Scripting Games, and you really should, you would do well to review the content I created for the 2011 Scripting Games Guide. It will look similar to the 2011 Scripting Games Guide.
I have been busy working on the study guide for the 2012 Scripting Games. Microsoft Scripting Guy, Ed Wilson, is here. Summary: Microsoft Scripting Guy, Ed Wilson, shows how to use Windows PowerShell to select unique objects and properties from a sorted list.
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