chaidocs
linux

3. Users & Permissions

Akash Kadlag 24 pages 1 min read Updated Oct 20, 2026
On this page
  1. Welcome
  2. Everything has owner
  3. Account
  4. Groups
  5. User Details
  6. Types of Account
  7. sudo
  8. Why sudo
  9. Practise Round - 1
  10. long listing
  11. Permission Types
  12. Owner, Group & Others
  13. Change File Permissions
  14. Change Ownership
  15. Practice Round - 2
  16. Common Mistakes
  17. chmod 777
  18. Keeping gate wide open
  19. Challenges
  20. Challenge - 1
  21. Challenge - 2
  22. Challenge - 3
  23. Challenge - 4
  24. Bonus

Welcome

01 Welcome

Everything has owner

02 Everything has owner

Account

03 Account

Groups

04 Groups

User Details

05 User Details

Types of Account

06 Types of Account

sudo

07 sudo

Why sudo

08 Why sudo

Practise Round - 1

09 Practise Round - 1

long listing

10 long listing

Permission Types

11 Permission Types

Owner, Group & Others

12 Owner, Group & Others

Change File Permissions

13 Change File Permissions

Change Ownership

14 Change Ownership

Practice Round - 2

15 Practice Round - 2

Common Mistakes

16 Common Mistakes

chmod 777

17 chmod 777

Keeping gate wide open

18 Keeping gate wide open

Challenges

19 Challenges

Challenge - 1

20 Challenge - 1

Challenge - 2

21 Challenge - 2

Challenge - 3

22 Challenge - 3

Challenge - 4

23 Challenge - 4

Bonus

24 Bonus