Claude Bash Tutor Skill — Security skill for Claude Code

Claude-Bash-Tutor-Skill

Claude Skill teaching bash from the ground up: 17 units, prompt basics through security and debugging. Every example runs live in a sandbox. Quizzes test understanding, not recall. Progress tracking follows the learner unit by unit.

Bash Instructor

A [Claude Skill](https://www.anthropic.com/news/skills) that teaches bash and shell scripting. Claude works through a full curriculum one topic at a time, runs every example live instead of describing it, quizzes for real understanding, and tracks progress as the learner goes.

Why this exists

Most "explain bash to me" conversations are one-shot: you ask, Claude answers, and that's it. Nothing carries over. No check on whether the explanation landed, no structured path from never having written a script to feeling comfortable with `sed`, `find`, and secure scripting. This skill gives Claude four things instead:

• a fixed 17-unit syllabus (plus a cheat-sheet unit) to teach from, instead of improvising coverage each session
• a teaching loop: explain, demo live, learner tries it, quiz, feedback
• instructions to execute the learner's code in a sandbox and grade it against real output, instead of guessing whether it looks right
• a lightweight progress tracker so a multi-session course stays coherent

The curriculum follows the chapter structure of O'Reilly's *Bash Cookbook* (Albing, Vossen & Newham), a well-established sequence of shell topics. Every explanation, example, pitfall, and quiz question here is original writing, not reproduced from that book or any other.

What's inside

#	Unit	Covers
1	Getting oriented	prompt, built-ins vs external commands, file info, quoting basics
2	Output and input	echo/printf, redirection, pipes, here-documents, read
3	Running commands	exit status, &&/||, $(...), backgrounding, error handling
4	Variables and parameters	export, positional params, $@ vs $*, defaults