Return the unique items from a sorted list.
Syntax
Get-Unique [-inputObject psobject] [-asString] [CommonParameters]
Get-Unique [-inputObject psobject] [-onType] [CommonParameters]
Key
-inputObject
A command/expression/variable that returns the object(s)
(will treat as a single collection)
-asString
Treat the data as a string, not an object.
Use this parameter to find the unique values of object properties
e.g. file names.
For a collection of objects of the same type, Get-Unique will
returns just one (the first).
-onType
Return only one object of each type.
CommonParameters:
-Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutVariable.
Examples
Sort an array of integers, and display the unique values:
PS C:\>2,4,6,8,2,64,4,2,99,3 | sort-object | Get-Unique
List every folder on the C: drive that contains one or more .xls files:
PS C:\>gci C:\ -include *.xls -recurse |foreach {$_.directoryName} | get-unique
for more examples:
PS C:\>help get-unique -detailed
"An Englishman, even if he is alone, forms an orderly queue of one" - George Mikes
Related:
Select-Object - Select objects based on parameters set in the Cmdlet command string
Sort-Object - Sort the input objects by property value
Equivalent bash command: useradd - Create new user accounts
