Linux User Management Tutorial | Users, Groups, Permissions, Sudoers & Access Control #linux

In this video, you will learn advanced Linux User Management using the command line interface (CLI). We cover user creation, group management, file permissions, sudo configuration, password policies, auditing, and Linux access control techniques used by system administrators and cybersecurity professionals.

This tutorial is ideal for Linux administrators, DevOps engineers, CCNA/CCNP students, ethical hackers, and anyone preparing for Linux system administration roles.

📌 Topics Covered:
✔ Linux user lifecycle management
✔ Creating and deleting users
✔ Group management and permissions
✔ File ownership and chmod/chown
✔ Sudoers configuration and RBAC
✔ Password expiration policies
✔ Linux authentication and PAM concepts
✔ Monitoring user activity and audit logs
✔ Security best practices for Linux access control

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💻 Commands Used in This Video
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sudo adduser developer1
sudo usermod -aG developers developer1
sudo chown developer1:developers /shared/project
sudo chmod 770 /shared/project
id developer1

sudo userdel -r developer1
sudo groupdel developers
chage -l developer1
passwd -e developer1
groups developer1

sudo chmod -R u+rwx,g+rX,o-rwx /data
sudo chage -M 90 -W 7 developer1

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🛡 Advanced Sudoers & Group Management
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sudo groupadd app_deploy
sudo usermod -aG app_deploy jenkins

Cmnd_Alias DEPLOY = /usr/bin/git, /usr/bin/docker
app_deploy ALL=(root) DEPLOY

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📊 Monitoring & Reporting Tools
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last
lastlog
/var/log/auth.log
who
w
sudo aureport -u

🎯 By the end of this video, you will understand how Linux handles users, permissions, authentication, and administrative access in real-world server environments.

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Видео Linux User Management Tutorial | Users, Groups, Permissions, Sudoers & Access Control #linux канала CoreSah Networks