Platform-specific considerations in PowerShell - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a key platform-specific consideration when writing PowerShell scripts?

Different operating systems have different file paths, commands, and environment variables. PowerShell scripts must handle these differences to work correctly across platforms.

beginner

How does PowerShell handle file paths differently on Windows vs Linux?

Windows uses backslashes (\) in file paths, while Linux uses forward slashes (/). PowerShell provides automatic path conversion or you can use the Join-Path cmdlet to handle paths correctly.

intermediate

Why should you check the platform inside a PowerShell script?

To run platform-specific commands or adjust behavior, you can check the platform using the automatic variable $PSVersionTable.PSEdition or [System.Environment]::OSVersion.Platform.

intermediate

What is a common difference in environment variables between Windows and Linux in PowerShell scripts?

Windows environment variables are case-insensitive and accessed like $env:Path, while Linux variables are case-sensitive. Also, some variables exist only on one platform.

beginner

How can you write a PowerShell script that works on both Windows and Linux?

Use platform checks to run platform-specific code, use cmdlets like Join-Path for paths, avoid Windows-only commands, and test scripts on both platforms.

Which cmdlet helps handle file paths correctly across platforms in PowerShell?

A Set-Location

B Get-ChildItem

C New-Item

D Join-Path

Join-Path combines parts of a file path using the correct separator for the platform.

What symbol does Linux use for file paths that differs from Windows?

A /

B \

C :

D |

Linux uses forward slashes (/) in file paths, unlike Windows which uses backslashes (\).

How can you detect the operating system platform inside a PowerShell script?

A $PSVersionTable.PSEdition

B $env:OS

C Both A and D

D [System.Environment]::OSVersion.Platform

Both $PSVersionTable.PSEdition and [System.Environment]::OSVersion.Platform can be used to detect the platform.

Which environment variable behavior differs between Windows and Linux in PowerShell?

A Variable name prefix

B Case sensitivity

C Variable type

D Variable length

Windows environment variables are case-insensitive, while Linux environment variables are case-sensitive.

What is a good practice to make PowerShell scripts cross-platform?

A Use platform detection and platform-agnostic cmdlets

B Avoid platform checks

C Use Windows-only commands

D Hardcode file paths

Using platform detection and platform-agnostic cmdlets like Join-Path helps scripts run on multiple platforms.

Explain why platform-specific considerations are important when writing PowerShell scripts.

Think about how Windows and Linux handle files and commands differently.

Describe how you would write a PowerShell script that works on both Windows and Linux.

Consider how to handle differences in commands and file paths.