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]>
1.2 KiB
Reflection: Filtering Is a Reasoning Skill, Not a Syntax Trick
Reflection questions
- Before this module, how would you have found "the important lines" in a huge log file?
How does that compare to
grep? - Which combination (pipe, redirect, or a specific command like
tail -f) do you expect to use the most once you're doing real troubleshooting work?
Real Ops takeaway
"Read everything and eyeball it" does not scale — filtering does. Every troubleshooting
framework you'll learn later in ROOT_ (starting with ROOT 02's own version, then again more
formally in ROOT 10) depends on being able to quickly narrow a huge amount of system output down
to the handful of lines that actually matter. grep, pipes, and redirection are the first real
tools you have for that — not a syntax exercise, a reasoning skill.
This module is complete. Continue to the next module.
Instructor Notes
Discussion questions for a live classroom: question 1 often produces good answers ("I'd just scroll and read") that make the value of filtering obvious by contrast — let students articulate this themselves rather than stating it for them.
Approximate timing: 5-8 minutes live discussion; 5 minutes self-paced writing.