Harden permission drift audit

linuxHARDLINUX

Harden permission drift audit

Hard Linux arena: Unix permissions, ownership, and safe read-only inspection

XP reward

340

Coins

Target time

40m

Mission locked

Missing prerequisites: linux-easy-permissions-audit

A deployment directory started denying reads to the application user after a rushed hotfix. You are working inside a Linux production host, and the arena only clears when the result is safe, deterministic, and explainable.

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

./deploy contains nested files, directories with spaces, and mixed ownership metadata. Design for correctness under duplicates, missing values, and high-volume input. Submit the solution plus enough reasoning to pass hidden edge cases.

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

locked

Clear the route first

You can read the mission brief, but the editor, hints, tests, and submit flow stay locked until progression or plan access catches up.

Enter Immersive

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

340

Coins

Mission Route

Previous Next

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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-hard-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.

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linuxHARDLINUX