Tuesday, March 17, 2026

Beginner-Friendly Unix Commands Guide (Step-by-Step with Examples) – Start Your DevOps & Cloud Journey

If you are starting your journey into DevOps, Cloud, or Software Development, learning Unix/Linux commands is the first and most important step.

This guide explains commands in a step-by-step way, so even a complete beginner can follow along and practice.

🧭 Step 1: Open Terminal

On Linux/Mac → Open Terminal
On Windows → Use Git Bash / WSL

📁 Section 1: File & Folder Basics (Start Here)

🔹 1. Check Current Location

pwd

👉 Output:

/home/user

✔️ This shows where you are currently working.

🔹 2. List Files

ls

👉 Shows all files in current folder

ls -l

👉 Detailed view (size, permissions)

🔹 3. Create a Folder

mkdir project

👉 Now check:

ls

🔹 4. Go Inside Folder

cd project

👉 Verify:

pwd

🔹 5. Create a File

touch app.txt

👉 Check:

ls

📄 Section 2: Working with Files

🔹 6. Add Content to File

echo "Hello DevOps" > app.txt

🔹 7. View File Content

cat app.txt

🔹 8. Edit File

vi app.txt

👉 Press:

i → insert mode
Edit text
ESC → :wq → save & exit

🔹 9. Copy File

cp app.txt backup.txt

🔹 10. Rename File

mv backup.txt newbackup.txt

🔹 11. Delete File

rm newbackup.txt

🔍 Section 3: Searching & Logs

🔹 12. Search Text in File

grep "Hello" app.txt

🔹 13. Find Files

find . -name "*.txt"

🔹 14. View Logs Live (Very Important)

tail -f app.txt

👉 Used in real-time debugging

⚙️ Section 4: System Monitoring

🔹 15. Check Running Processes

ps aux

🔹 16. Monitor System

top

👉 Shows:

CPU usage
Memory usage

🔹 17. Kill Process

kill 1234

🔹 18. Check Memory

free -m

🔹 19. Check Disk

df -h

🌐 Section 5: Networking

🔹 20. Test Internet

ping google.com

🔹 21. Call API

curl https://api.github.com

🔹 22. Download File

wget https://example.com/file.zip

📦 Section 6: Compression

🔹 23. Create Archive

tar -cvf files.tar project/

🔹 24. Extract Archive

tar -xvf files.tar

🔐 Section 7: Permissions

🔹 25. Change Permissions

chmod 755 app.txt

🔹 26. Change Owner

chown user app.txt

🔁 Real Beginner Practice (Do This Step-by-Step)

mkdir demo
cd demo
touch test.txt
echo "Learning Unix" > test.txt
cat test.txt
cp test.txt copy.txt
ls
rm copy.txt

👉 If you can do this, you’ve started your DevOps journey 🚀

🎓 How Beginners Benefit

Understand how servers work
Gain confidence in command line
Prepare for DevOps & Cloud roles
Improve debugging skills

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🌟 Final Thoughts

Start small. Practice daily.

👉 Even 30 minutes of command-line practice can transform your career path into DevOps and Cloud.

💡 Next Step: Practice these commands daily and try them on your system.

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