Atul Maurya - Blogs

1. What is PowerShell?

PowerShell is Windows’ modern and powerful command-line shell used for automation and scripting.

It is much stronger than CMD because it can:

automate tasks

manage servers

work with files, processes, services

connect to Cloud (Azure, AWS)

run advanced scripts

2. Why DevOps Engineers Must Know PowerShell

PowerShell is used for:

✔ Windows server administration

✔ Automation tasks

✔ Cloud automation (especially Azure)

✔ CI/CD pipelines

✔ Managing services, processes, users

✔ Writing scripts to remove manual work

PowerShell = CMD + superpowers.

3. PowerShell Commands Are Called “Cmdlets”

Cmdlets follow this format:

Verb-Noun

Examples:

Get-Process
Get-Service
Get-ChildItem
Stop-Process
Restart-Computer

Very easy to read and understand.

4. Basic PowerShell Commands (Just the essentials)

📌 List files

Get-ChildItem

📌 Change directory

Set-Location foldername

📌 Create folder

New-Item -ItemType Directory -Name test

📌 Remove file

Remove-Item file.txt

📌 Show running processes

Get-Process

📌 Stop a process

Stop-Process -Name notepad -Force

5. PowerShell Scripts (.ps1)

PowerShell scripts use the .ps1 extension.

Example:

Write-Output "Hello DevOps!"

Run script:

.\hello.ps1

6. Execution Policy (Very Important)

PowerShell may block scripts for security.

To allow script execution:

Set-ExecutionPolicy RemoteSigned

Check current policy:

Get-ExecutionPolicy

PowerShell is now the main shell for Windows automation.

8. When Should You Use PowerShell?

Use PowerShell when you need:

automation

scripting

cloud commands

server management

DevOps tasks

working with JSON, APIs, files

CMD is for basics.

PowerShell is for real work.

PowerShell :