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A faster way to output unique objects in PowerShell

August 15, 2012 Leave a comment

Many times – mainly when writing function cmdlets for other purposes – I find that I need to output all unique objects based on one or two properties but want all the objects’ properties returned. PowerShell’s built-in Select-Object doesn’t let me do that. Apart from enumerating and collecting all objects before outputing them to the pipeline, it only return the properties that you specified.

To let all the objects flow through the pipeline as they are enumerating, I added my own Select-Unique cmdlet to my $profile a couple of years ago but wanted to share it now as a Gist.

See the comments on the gist for more information.