Understanding Linux User Permissions and Sudo
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Understanding Linux User Permissions and Sudo

Beginner 🗺️ Linux System Administration Roadmap (Beginner to Advanced)
Prerequisites
Linux Package Managers: apt, yum/dnf, and rpm Basics Understanding Linux Processes and Job Control Understanding Linux Processes and Job Control File Permissions and Ownership Basics in Linux Environment variables and shell configuration files (.bashrc, .profile) — Linux Basics and Environment Setup (from Linux System Administration Roadmap (Beginner to Advanced) roadmap, beginner level) Environment variables and shell configuration files (.bashrc, .profile) — Linux Basics and Environment Setup (from Linux System Administration Roadmap (Beginner to Advanced) roadmap, beginner level) Managing users and groups (useradd, groupadd, passwd) — User and Permission Management (from Linux System Administration Roadmap (Beginner to Advanced) roadmap, beginner level)

1. Linux User Permissions Fundamentals

  • 1. Introduction to Linux User and Group Concepts
  • 2. Understanding Linux File Permissions: rwx for User, Group, and Others
  • 3. Using chmod, chown, and chgrp Commands to Manage Permissions and Ownership
  • 4. Special Permissions: setuid, setgid, and Sticky Bit Explained

2. Practical Use of Sudo for Privilege Management

  • 1. What is sudo? Understanding Privilege Escalation
  • 2. Configuring sudo: Editing /etc/sudoers Safely with visudo
  • 3. Granting and Restricting sudo Access for Users and Groups
  • 4. Best Practices for Secure sudo Usage and Auditing

3. Hands-On Permissions and Sudo Practice

  • 1. Practice: Setting Up Users, Groups, and Permissions
  • 2. Practice: Configuring sudoers and Using sudo Securely
Up Next
Disk and partition basics (fdisk, parted, lsblk) — Storage and Filesystem Management (from Linux System Administration Roadmap (Beginner to Advanced) roadmap, beginner level) Disk and partition basics (fdisk, parted, lsblk) — Storage and Filesystem Management (from Linux System Administration Roadmap (Beginner to Advanced) roadmap, beginner level)