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Using the Windows PowerShell Compatibility Module in PowerShell Core

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Windows Compatibility Module is located in github.com

Access and use Windows PowerShell cmdlets from your PowerShell Core session on a Windows computer.

Missing cmdlets from PowerShell Core

In the last post, we installed PowerShell Core on a Windows computer. However, if you were to try using some common Windows PowerShell cmdlets from the session or via script, such as Get-WmiObject, you would get an error (below) because Get-WmiObject is a Windows PowerShell cmdlet and not part of PowerShell Core.

PS C:\Users\Demo> Get-WmiObject -Class Win32_ComputerSystem                                                             Get-WmiObject : The term 'Get-WmiObject' is not recognized as the name of a cmdlet, function, script file, or operable program.                                                                                                                 At line:1 char:1                                                                                                        + Get-WmiObject -Class Win32_ComputerSystem                                                                             + ~~~~~~~~~~~~~                                                                                                         + CategoryInfo          : ObjectNotFound: (Get-WmiObject:String) [], CommandNotFoundException                           + FullyQualifiedErrorId : CommandNotFoundException

Install Windows PowerShell Compatibility Module

Recognizing that in order to get Windows users to start installing and using PowerShell Core it had to be on par with Windows PowerShell, Microsoft released the Windows PowerShell Compatibility Module. This module makes Windows PowerShell cmdlets available from a PowerShell Core session.

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Install PowerShell Core on Windows

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Install manually via MSI or with the Chocolatey package manager.

Installing PowerShell Core using MSI

The primary way for installing PowerShell Core is to download the official MSI release from the PowerShell GitHub page. Scroll down to Get PowerShell and click the .msi link from the Downloads (stable) column for your version of Windows (either x86 or x64).

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Use PowerShell to Monitor RSS/Atom Feed

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An script for monitoring Digital Ocean feed.
An script for monitoring Digital Ocean feed.

Use PowerShell’s Invoke-WebRequest to retrieve and parse an RSS or Atom feed.

Status monitoring feeds aplenty

There are a lot of third party services that provide status monitoring updates through RSS/Atom feeds. Statuspage is a popular service that other companies use for providing this type of status monitoring feed, as well as a status page for web viewing.

For my case, I wanted to take advantage of monitoring one of these status feeds, but I wanted to do it using PowerShell so I could send email alerts and display status information within Solarwinds Orion. Here is how I used the Atom feed from DigitalOcean‘s Statuspage.

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PSSnapin: The Original Way to Extend PowerShell

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Use Get-PSSnapin to see loaded snapins.
Use Get-PSSnapin to see loaded snapins.

PowerShell snap-ins (PSSnapin) were the 1.0 way of extending PowerShell’s functionality.

In this post of the series “PowerShell 1.0 – The First Cmdlets“, we will cover Get-PSSnapin , Add-PSSnapin , and Remove-PSSnapin , which encompass the cmdlets needed for managing PowerShell snap-ins.

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