Living under a rock - Powershell Core

Recently I learnt that there have been many great advances in Powershell in recent years. This post is to highlight some of them to developers who may have also been turning a blind eye.

Powershell CORE exists, and it’s cross platform

I’m a bit late to the party with this one - it was announced in 2016. If you didn’t know, now you do, you can get more information on it or you can install it with chocolately:

    choco install powershell-core

Requires statements:

Powershell has an excellent #requires statement

The #Requires statement prevents a script from running unless the PowerShell version, modules (and version), or snap-ins (and version), and edition prerequisites are met. If the prerequisites aren’t met, PowerShell doesn’t run the script.

More information can be found on

Specifically I made heavy use of two statements, this gem specifies that the PowerShell session in which you’re running the script must be started with elevated user rights:

#requires -RunAsAdministrator

The following ensures the developer running your script is using Powershell Core

#requires -PSEdition Core 

How to create powershell modules

You can create your own powershell modules. Here is some example code showing:

  • Powershell module,
  • Powershell module manifest
  • Unit test (with mocks) using Pester.

Some links I found useful whilst developing:

VS Code:

VS Code has excellent support for Powershell Core.

You can select this from the version number in the lower right corner.

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