learn-dev-basics

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By HyunjunJeon/fastcampus-harness-engineering-course (GitHub) · coding · 21 stars · scanned at commit c7090e6

A beginner-friendly guide to CLI basics and Git fundamentals for non-developers, grounded in the Harness Engineering framework. Uses everyday analogies, real examples, and evidence-based reasoning (including the ~45% Silent Failure Rate in AI-generated code) to explain why CLI and Git are essential control surfaces for AI coding agents. Supports both Claude Code and Codex. Use this skill whenever users mention terminal, CLI, commands, command line, Git, version control, development basics, codi…

Works with any agent that supports SKILL.md skills.

What this skill can do

Downloads and installs other software

The author does not mention this.

Found in 4 places.

.agents/skills/learn-dev-basics/references/03-install-guide.md, line 12npx skills add [owner]/fastcampus-harness-online-learning
.agents/skills/learn-dev-basics/references/03-install-guide.md, line 125| Claude Code not installed | Run `npm install -g @anthropic-ai/claude-code` |
.agents/skills/learn-dev-basics/references/03-install-guide.md, line 126| Codex not installed | Run `npm install -g @openai/codex` |

Show 1 more

.agents/skills/learn-dev-basics/references/03-install-guide.md, line 129| `npx skills add` fails | Requires Node.js 18+. Check with `node -v` |

Changes files outside its own folder

The author does not mention this.

Found in 2 places.

.agents/skills/learn-dev-basics/references/03-install-guide.md, line 58mkdir -p ~/.claude/skills/omc-learned/learn-dev-basics/references
.agents/skills/learn-dev-basics/references/03-install-guide.md, line 81mkdir -p ~/.codex/skills/learn-dev-basics/references

Safer alternatives

Low-risk skills in the same category (coding) that look related. Check that one does what you need.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'learn-dev-basics' ] || [ -L ~/.agents/skills/'learn-dev-basics' ]; then echo 'A skill folder named learn-dev-basics already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/HyunjunJeon/fastcampus-harness-engineering-course' "$d" && git -C "$d" checkout --quiet 'c7090e63259ecb5d2bd84f2751cb44e0876becc2' -- '.agents/skills/learn-dev-basics' && mkdir -p ~/.agents/skills && cp -R "$d"/'.agents/skills/learn-dev-basics' ~/.agents/skills/'learn-dev-basics' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'learn-dev-basics' ~/.claude/skills/'learn-dev-basics' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-07	`c7090e6`	75

Also found in

Identical copies of this skill exist at:

HyunjunJeon/fastcampus-harness-engineering-course/.claude/skills/learn-dev-basics