PowerShell Select-Object Property and ExpandProperty

PowerShell is a scripting tool in Windows that is used to perform automation and administration tasks. It has various cmdlets that are used to get the filtered results, such as “Select-Object” and “-ExpandProperty”. More specifically, the “-ExpandProperty” is a part of the “Select-Object” cmdlet and is utilized in the expansion process of the properties in PowerShell.

This write-up will overview a guide to resolve the mentioned problem.

What are the “Select-Object” and “ExpandProperty” Properties in PowerShell?

The “Select-Object” cmdlet is utilized to select the objects and their properties from a collection of objects. While the “-ExpandProperty” is a “Select-Object” cmdlet’s switch that helps to get the details of the particular property.

Example 1: Display Property Values of an Object

This example will demonstrate the usage of “Select-Object” and “-ExpandProperty” cmdlets to select objects and properties from an array:

$Car = @(





According to the above code:

  • First, create an array of custom objects in PowerShell and assign it to a variable “$Car”.
  • Inside an array, create three objects and add three properties inside each object.
  • After that, assign the custom values to the defined properties:

Let’s select and display the object values in the output. For that reason, execute the given line of code:

> $Car | Select-Object -ExpandProperty CarName

According to the above code:

  • First, add the array assigned variable “$Car”. After that, add the “|” pipeline to transfer the output from the “$Car” array to the “Select-Object” cmdlet.
  • After that, use the “-ExpandProperty” cmdlet switch and assign the “CarName” property to get and display the values in the PowerShell console:

As it can be observed that the values have been displayed using the “Select-Object” and “-ExpandProperty”.

Example 2: Extract Services Name

This example will extract the last five services name using the “Get-Service” cmdlet:

> Get-Service | Select-Object -ExpandProperty Name -Last 5

In the above-stated code:

  • First, add the “Get-Service” cmdlet and then use the “|” pipeline to pass the output to the “Select-Object” cmdlet.
  • After that, use the “-ExpandProperty” switch command to select the particular value, which is “Name” followed by the “-Last” attribute, and define value “5” to display the name of the last five services:

It can be observed that the last five service names have been displayed on the PowerShell console.


The “Select-Object” cmdlet in PowerShell is used to select the properties from a collection of objects. While “-ExpandProperty” is the switch of the “Select-Object” cmdlet that is used to select the particular details of the object. This write-up will overview a complete procedural guide about the “Select-Object” and the “-ExpandProperty”.

About the author

Muhammad Farhan

I am a Computer Science graduate and now a technical writer who loves to provide the easiest solutions to the most difficult problems related to Windows, Linux, and Web designing. My love for Computer Science emerges every day because of its ease in our everyday life.