linuxEASYLINUX
Repair a locked deployment directory
Easy Linux arena: Unix permissions, ownership, and safe read-only inspection
XP reward
90
Coins
8
Target time
12m
A release failed because the app user cannot read several files under ./deploy. The incident commander needs a deterministic inspection command, not a broad chmod hammer.
Learning objective
Learn to apply Unix permissions, ownership, and safe read-only inspection in a Linux production host while explaining the invariant, safety constraints, and hidden edge cases.
Mission order
Write shell commands that find files under ./deploy that are not readable by the current user, print stable relative paths, and avoid destructive permission changes.Visible checks
uses safe command composition
Expected: deterministic command sequence
handles ordinary filenames
Expected: stable output
Clear requirements
- Demonstrates Unix permissions, ownership, and safe read-only inspection
- Handles the visible sample and hidden edge cases
- Keeps output deterministic and explainable
- Avoids destructive host commands
Secure validation contract
Judge type
LINUX
Complexity target
Linear scan over simulated files/log rows with deterministic output
Simulated lab
3 files/directories, allowed commands: awk, cat, cut, du, df, find, grep, head
Workspace
Terminal lab
Simulated secure terminalhost isolated
Test Results
Run the visible checks when your first pass is ready.
Clear Protocol
1Read the scenario and restate the expected output shape.
2Run visible checks before chasing hidden edge cases.
3Use Genie for one nudge if stuck, then explain the invariant.
4Submit only when the result is deterministic and safe.
Rewards
XP
90
Coins
8
Mission Route
Hints
Hints are metered and logged for No Hint Hero runs.
Genie Mentor Core
Hint protocol / contextual guardrails active
Progressive hints
Failed-test aware
Solution guarded
Mission: linux-easy-permissions-audit0 attempts0 failed tests0 hints used
Progressive hint depth
Genie: Genie online. I use your mission, attempts, failed tests, hints, and path context to coach the next rep without dumping answers first.