Users & Permissions
Users, groups, chmod, chown, and sudo—the core of Linux access control.
1
Users and Groups
ReadingUnderstand Linux users, groups, UID, whoami, id, and /etc/passwd for access control.
15 min
+24 XP
2
File Permissions (chmod, chown)
ReadingRead rwx permissions in ls -l and change them with chmod and chown.
15 min
+24 XP
3
sudo & Root Access
ReadingUse sudo safely, understand root privileges, and why daily root login is risky.
15 min
+24 XP
4
Lab — Permission Challenge
ReadingPractice fixing script execute bits and locking down sensitive files with chmod.
25 min
+24 XP
5
Quiz — Permissions
Practice Quiz10-question quiz on users, groups, permission modes, and sudo.
10 min
+24 XP