Managing and Troubleshooting File and Directory Permissions in Linux

By Rob Marti

Learn permission schemes and how to manage and troubleshoot them.

3 hours
  • 20 Lessons
  • 5 Hands-On Labs

About the course

This course aims to alleviate some of the confusion about different permission schemes in Linux and gives tips on how to troubleshoot common permission errors. We’ll cover "normal" (octal) permissions, ACLs, SELinux configurations, and some other special permission settings that are less common.

  • Chapter 1 2 Lessons Course Introduction 2:22

    An Important Note About A Cloud Guru and Linux Academy Courses


    Course Introduction

  • Chapter 2 6 Lessons Understanding Octal Permissions in Linux 49:41

    What are Octal Permissions?


    User Permissions vs. Group Permissions


    Understanding `umask`


    Permissions on Links


    Special Interactions Based on the `root` User


    Using Octal Permissions to Set up a Collaboration Area

    15:00 Hands-On Lab
  • Chapter 3 3 Lessons Linux Access Control Lists 48:47

    Working with `getfacl` and `setfacl`


    Understanding the Interaction between ACLs and Octal Permissions


    Using ACLs to Allow Collaboration

    30:00 Hands-On Lab
  • Chapter 4 4 Lessons SELinux 52:15

    Understanding SELinux Labels


    Understanding SELinux Booleans


    Interactions Among Different Permission Schemes


    Troubleshooting SELinux on Files and Directories

    30:00 Hands-On Lab
  • Chapter 5 4 Lessons Special Bits 1:13:25

    What are Special Bits?


    Special Attributes


    Working with Special Bits

    15:00 Hands-On Lab

    Managing and Troubleshooting File Permissions

    45:00 Hands-On Lab
  • Chapter 6 1 Lesson Conclusion 0:58



What you will need

  • Beginner Linux knowledge, a desire to understand more about permissions

What are Hands-on Labs

What's the difference between theoretical knowledge and real skills? Practical real-world experience. That's where Hands-on Labs come in! Hands-on Labs are guided, interactive experiences that help you learn and practice real-world scenarios in real cloud environments. Hands-on Labs are seamlessly integrated in courses, so you can learn by doing.

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