How to Add Existing User to an Existing Group in Ubuntu/Linux [GUIDE]

Managing users and groups is a key part of Linux system administration. In this tutorial, you'll learn how to add an existing user to an existing group using the command line — a skill that’s essential for handling permissions and user roles on a Linux system. 🧠🐧

✅ What You'll Learn in This Video:
💡 What usermod does and when to use it
🔐 How to safely add a user to a group using sudo
📋 How to check if the user was added successfully
⚙️ Real-world example using developers group and john user
🔍 How to view a user's group memberships

⏱️ Timestamps – Skip to What You Need:
00:00 – Introduction & why this matters
00:11 – Opening the terminal
00:28 – Syntax for the usermod command
00:48 – Example: Adding ‘john’ to ‘developers’ group
01:13 – Verifying group by command

🧩 Commands to Run:
⚡ sudo usermod – ag (GroupName)(Username)
⚡ groups (UserName)

🎯 Why Watch This Video?
👨‍💻 Ideal for system admins, Linux users, and developers
🛡️ Understand user access management for shared projects
💼 Manage groups in multi-user environments easily
🧩 Works on Ubuntu, Debian, and most Linux distros
⚡ Learn practical Linux skills in under 3 minutes

🎓 More Ubuntu & Linux Tutorials:
📺 Check out our Linux playlist: https://www.youtube.com/playlist?list=PLe70GZ5czXnxk1hXB4TZtbPD8w7101AyZ

💬 Enjoyed the Video? Support the Channel!
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💬 Comment below if you have questions or need help
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Thanks for watching and happy terminal-ing! 🖥️🐧

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Видео How to Add Existing User to an Existing Group in Ubuntu/Linux [GUIDE] канала Delft Stack