ced4568andClaude Sonnet 5
15b616274b
Adds all 6 ROOT 01 modules (how computers run software, the shell, filesystem navigation, files & text, processes, users & permissions foundations), each with a real lesson, demonstration/guided exercise, knowledge check where warranted, a hands-on Lab, and a reflection — 35 activities, 29 new content files. Adds 6 new hands-on Linux scenarios (linux-inspect-hardware, linux-shell-basics, linux-filesystem-navigation, linux-files-and-text, linux-process-management, linux-permissions-foundations) plus 2 MCQ scenarios, using the existing generic scenario/ validation engine (docs/ROOT_FOUNDATIONS_LAB_STRATEGY.md §1) — every one tested end-to-end via the real scenario setup/validate API, including negative tests confirming they correctly FAIL when not actually solved (e.g. the process-management scenario fails while the target process is still running; the permissions scenario is tested against a real `su - labuser` denial). Wires rootnode-linux-foundations-assessment (2 required + 4 random-draw scenarios) using the existing Phase 3B assessment engine. Adds a real, server-side ROOT 01->02->03->04->05 course prerequisite chain (courses.prerequisites) — verified live on two students: one who completed ROOT 01 sees ROOT 02 unlock; a fresh student sees ROOT 02 correctly locked while 03/04/05 stay vacuously satisfied (their own prerequisite courses are still empty). ROOT 06+ and the Capstone are unaffected. Co-Authored-By: Claude Sonnet 5 <[email protected]>
37 lines
2.3 KiB
JSON
37 lines
2.3 KiB
JSON
{
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"id": "linux-inspect-hardware",
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"title": "Inspect What This Machine Actually Has",
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"category": "Linux Fundamentals",
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"isolation_type": "shared_namespace",
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"difficulty": "Easy",
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"type": "task",
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"weight": 3,
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"description": "## Inspect What This Machine Actually Has\n\nThe kernel manages CPU, memory, and storage on behalf of every process running here — before you go further, look at what's actually available.\n\n**Your task:**\n\n1. Find the number of CPUs available (`nproc`)\n2. Find the total memory in MB (`free -m`)\n3. Find the size of the root filesystem in GB (`df -BG /`)\n4. Create a file at `/srv/hardware-lab/report.txt` with exactly three lines in this format (replace `<n>` with the real numbers you found):\n\n```\nCPUS=<n>\nMEM_MB=<n>\nDISK_GB=<n>\n```",
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"hints": [
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{
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"title": "Getting each number",
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"body": "`nproc` alone prints the CPU count. `free -m` prints a table — the second column of the `Mem:` row is total memory in MB. `df -BG /` prints a table — the second column of the second row is the root filesystem size in GB (the number, not including the trailing G).",
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"command": "nproc; free -m; df -BG /"
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},
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{
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"title": "Writing the report",
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"body": "Use a heredoc or several `echo` lines with `>>` to build the file.",
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"command": "mkdir -p /srv/hardware-lab && cat <<EOF > /srv/hardware-lab/report.txt\nCPUS=$(nproc)\nMEM_MB=$(free -m | awk '/Mem:/ {print $2}')\nDISK_GB=$(df -BG / | awk 'NR==2{gsub(\"G\",\"\",$2); print $2}')\nEOF"
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}
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],
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"setup_commands": [
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{ "command": "mkdir -p /srv/hardware-lab" }
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],
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"validation": {
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"commands": [
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{ "description": "report.txt exists and has a CPUS line", "command": "grep -E '^CPUS=[0-9]+$' /srv/hardware-lab/report.txt", "expected_output": "^CPUS=[0-9]+$", "match": "regex" },
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{ "description": "report.txt has a MEM_MB line", "command": "grep -E '^MEM_MB=[0-9]+$' /srv/hardware-lab/report.txt", "expected_output": "^MEM_MB=[0-9]+$", "match": "regex" },
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{ "description": "report.txt has a DISK_GB line", "command": "grep -E '^DISK_GB=[0-9]+$' /srv/hardware-lab/report.txt", "expected_output": "^DISK_GB=[0-9]+$", "match": "regex" }
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]
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},
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"default_namespace": "default",
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"teardown_commands": [
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{ "command": "rm -rf /srv/hardware-lab" }
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]
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}
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