👤 Day 7 of My Linux Journey – Understanding Users, Groups & Ownership

Assalamualaikum tech fam!

I'm Fiza, and welcome back to my Linux learning journey! Every day, I’m diving into a new Linux concept and sharing what I learn here on Hashnode — this is Day 7 of my #100DaysOfLinux series! 🚀

Yesterday, I explored file permissions, and today, I went one step further into the world of users, groups, and file ownership — a key concept in Linux administration.

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🧑‍💻 What Are Users & Groups?

Linux is a multi-user system, which means multiple users can exist and work on the same machine. Each user is assigned:

A username

A UID (User ID)

Users can be organized into groups, which share certain access privileges.

🔍 See who you are (current user):

whoami

👥 View all users on the system:

cat /etc/passwd

This file stores user account information.

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📁 Understanding File Ownership

Each file and folder in Linux is owned by:

A user

A group

You can view this with:

ls -l filename

Example output:

-rw-r--r-- 1 fiza developers 120 May 30 10:00 notes.txt

fiza → file owner

developers → group that has access

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🛠 Managing Ownership

🔸 Change file owner:

sudo chown newuser filename

🔸 Change file group:

sudo chgrp newgroup filename

🔸 Change both:

sudo chown newuser:newgroup filename

\> 🔐 You need sudo privileges to change ownership.

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🔁 Recursive Ownership Change

To change ownership of an entire folder and all its contents:

sudo chown -R user:group /foldername

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🧠 Key Takeaway

Understanding users, groups, and ownership is essential for setting up proper access control on a Linux system. It’s the foundation of user management and security.

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💜 Stay Connected!

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View My Linux Projects on GitHub

👉 [Check out my GitHub](https://github.com/devopslover540)

See you in Day 8 – where I’ll explore Process Management in Linux! 🔄

#Linux #100DaysOfLinux #SysAdmin #FOSS #LinuxBasics #Hashnode #FizaOnLinux

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Would you like me to write Day 8 next (Process Management), or do you want to cover something else tomorrow? Let me know!