Group-Object

Groups the objects that contain the same value for a common property.

Snap-In: Microsoft.PowerShell.Utility

Syntax:

Group-Object [

 [-Property] <Object[]>] [-NoElement] [-InputObject <PSObject>] [-Culture <String>] [-CaseSensitive] [-Verbose] [-Debug] [-ErrorAction <ActionPreference>] [-ErrorVariable <String>] [-OutVariable <String>] [-OutBuffer <Int32>] 

Description:

The group-object Cmdlet is used to group input objects based on the values of properties specified with the -Property parameter. The groups contain the count of objects in the group, as well as the members of that group.