Installing modules (Install-Module) in PowerShell - Quick Revision & Summary

Recall & Review

beginner

What does the PowerShell command Install-Module do?

It downloads and installs a PowerShell module from an online repository like the PowerShell Gallery, making new commands available to use.

beginner

How do you install a module named Az using Install-Module?

You run Install-Module -Name Az. This tells PowerShell to get the 'Az' module and install it on your system.

intermediate

Why might you need to run PowerShell as Administrator when using Install-Module?

Installing modules system-wide often requires admin rights to write files in protected folders. Running as Administrator avoids permission errors.

intermediate

What does the -Scope CurrentUser parameter do in Install-Module?

It installs the module only for the current user, avoiding the need for admin rights and keeping the module in the user's profile folder.

intermediate

How can you check if a module is already installed before running Install-Module?

Use Get-Module -ListAvailable -Name ModuleName. If it returns results, the module is installed.

What is the default repository used by Install-Module to get modules?

A GitHub

B PowerShell Gallery

C Microsoft Store

D NuGet Gallery

By default, Install-Module downloads modules from the PowerShell Gallery, an official Microsoft repository.

Which parameter installs a module only for the current user?

A -Scope CurrentUser

B -UserOnly

C -InstallForUser

D -Local

The -Scope CurrentUser parameter installs the module just for the current user.

If you get a permission error when running Install-Module, what should you try?

A Use <code>-Force</code> parameter

B Restart your computer

C Uninstall other modules first

D Run PowerShell as Administrator

Running PowerShell as Administrator gives the needed permissions to install modules system-wide.

How do you install a specific version of a module?

A <code>Install-Module -Name ModuleName -SpecificVersion 1.2.3</code>

B <code>Install-Module -Module ModuleName -Ver 1.2.3</code>

C <code>Install-Module -Name ModuleName -Version 1.2.3</code>

D <code>Install-Module ModuleName 1.2.3</code>

Use the -Version parameter with the version number to install a specific module version.

Which command checks if a module is installed?

A <code>Get-Module -ListAvailable -Name ModuleName</code>

B <code>Check-Module ModuleName</code>

C <code>Find-Module ModuleName</code>

D <code>Show-Module ModuleName</code>

Get-Module -ListAvailable lists installed modules matching the name.

Explain how to install a PowerShell module for just your user account and why you might want to do that.

Think about permissions and where modules are stored.

Describe the steps to check if a module is installed and then install it if missing.

First look, then install if needed.