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]>
1.3 KiB
Demonstration: The Same Word, Two Different Destinations
OBSERVE
Starting from /home/student, run cd project — you land at /home/student/project.
HYPOTHESIS
Now, from /home/student/project, what do you predict cd project will do this time?
INSPECT
$ pwd
/home/student/project
$ cd project
bash: cd: project: No such file or directory
It fails — there's no project directory INSIDE project (unless you happened to create one).
The exact same relative path meant something completely different depending on where you stood.
CHANGE
From /home/student/project, run cd ../project instead — this correctly goes back up one
level, then into project again, landing you right back where you started.
VERIFY
pwd after each cd to confirm exactly where you ended up — this habit (verify your location
before assuming it) prevents a huge share of "why did my command run somewhere unexpected"
confusion later.
Instructor Notes
Demo goal: Make "relative paths depend on where you are" concrete and slightly surprising, rather than an abstract rule to memorize.
Approximate timing: 8 minutes live.
Common mistake to watch for: students assume a relative path always means the SAME thing once they've used it once — reinforce that it's re-evaluated fresh every time, from wherever they currently are.