PowerShell

A task-based command-line shell and scripting language built on .NET.

When to Use

• Windows system administration

• Azure management

• Object-oriented scripting

• Cross-platform automation (PowerShell Core)

Quick Start

$name = "World" Write-Host "Hello, $name!"

$processes = Get-Process | Where-Object { $_.CPU -gt 10 } foreach ($p in $processes) { Write-Output $p.Name }

Core Concepts

Cmdlets

Lightweight commands used in the PowerShell environment (Verb-Noun structure).

• Get-Process

• New-Item

• Set-Location

Objects

PowerShell pipes Objects, not text.

Get-Service | Select-Object -Property Name, Status

Pipeline

Passes objects from one cmdlet to the next.

Best Practices

Do:

• Use the Verb-Noun naming convention for functions

• Use Try/Catch for error handling

• Use [CmdletBinding()] for advanced functions

• Output objects, not text (Write-Output over Write-Host )

Don't:

• Parse text output like in Bash (use object properties)

• Use aliases in scripts (readability)

References

• Microsoft PowerShell Docs