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LAB 04 / 08

museum@linux:~$ PERMISSIONS & USERS LAB

INSPECT, THEN MAKE THE SMALLEST SAFE FIX

Permissions are a way of describing who may read, write, or run something. The point is not to blindly prefix a command with sudo, but to understand the denial first.

WHAT YOU WILL LEARN

  • Inspect the fictional identity with whoami and id.
  • Read ls -l: owner, group, other, and the rwx permission model.
  • Understand the concepts behind chmod, root, and sudo.

MISSION PREVIEW

A FICTIONAL SCRIPT WILL NOT RUN.
INSPECT WHY.
FIX ONLY THE NECESSARY PERMISSION.

START THE INTERACTIVE LAB

START LAB →

Practice ownership and permissions in a resettable fictional browser-memory system. No real privilege escalation, sudo access, or changes to your computer.

SAFETY / BROWSER-ONLY

This interactive lab runs only a fictional browser-memory system. It never runs real shell commands or accesses your files, processes, services, or operating system.