version: 1

id: linux-shell-basics

title: Linux Shell and File Basics

summary: Practice core terminal skills—navigation, file creation, and output redirection—in an isolated environment.

difficulty: beginner

estimatedMinutes: 20

prerequisites: []

image: alpine:3.21

shell: /bin/sh

setup:

  - "mkdir -p /workspace/logs"

tasks:

  - id: navigation

    title: Explore and organize files

    description: Create /workspace/notes.txt containing the word platformforge and copy it to /workspace/logs/notes.bak using shell commands only.

    hints:

      - echo can write single-line files.

      - cp copies files between paths.

    checks:

      - type: file

        name: notes.txt exists

        path: /workspace/notes.txt

        value: platformforge

      - type: file

        name: backup exists

        path: /workspace/logs/notes.bak

        value: platformforge

      - type: command

        name: logs directory present

        command: test -d /workspace/logs

limits: {cpus: "0.5", memory: 128m, pids: 64, timeout: 1800, network: false}

attribution: "Adapted from 90DaysOfDevOps Linux fundamentals (Michael Cade, CC BY-NC-SA 4.0). Rewritten as an interactive PlatformForge scenario."