bash-expert

77 / 100 · Review before installing

Check before installing. Some of what it can do is expected: a coding skill usually runs build and test commands.

By jacazul-ai/launcher (GitHub) · coding · 13 stars · scanned at commit b4f5a3f

Expert system for shell scripting (POSIX sh and bash) with dialect detection via sh-mode, a pitfall census via sh-census, honest set -e rules, portability across dash, busybox and macOS bash 3.2, idempotent setup scripts, and review on the shared code-review scale.

Works with any agent that supports SKILL.md skills.

What this skill can do

Runs commands on your computer

This is disclosed by the author in the skill's SKILL.md or README. Expected for a coding skill.

Found in 1 place.

skills/bash-expert/CODE-REVIEW.md, line 301**Problem:** `eval "$cmd"`, `bash -c "$cmd $arg"`, building commands as

Downloads and installs other software

The author does not mention this.

Found in 5 places.

skills/bash-expert/CODE-REVIEW.md, line 310### 22. `curl | sh` and unverified downloads
skills/bash-expert/CODE-REVIEW.md, line 312**Problem:** `curl -s URL | bash`, `wget -O- URL | sh`, `sudo` variants.
skills/bash-expert/PLAYBOOK.md, line 142- no `curl ... | sh`; download, verify (checksum or signature), then run;

Show 2 more

skills/bash-expert/SKILL.md, line 31- No `eval` on input, no `curl | sh`, no `sudo` inside scripts.
skills/bash-expert/SKILL.md, line 115input, no `curl | sh`, no `sudo` in scripts, `${var:?}` before `rm -rf`,

Connects to the internet

The author does not mention this.

Found in 1 place.

skills/bash-expert/CODE-REVIEW.md, line 312**Problem:** `curl -s URL | bash`, `wget -O- URL | sh`, `sudo` variants.

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/'bash-expert' ] || [ -L ~/.agents/skills/'bash-expert' ]; then echo 'A skill folder named bash-expert already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/jacazul-ai/launcher' "$d" && git -C "$d" checkout --quiet 'b4f5a3f40fe54ea5ee255b906100daf027e33bb8' -- 'skills/bash-expert' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/bash-expert' ~/.agents/skills/'bash-expert' && 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/'bash-expert' ~/.claude/skills/'bash-expert' (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
2026-11-08	`b4f5a3f`	77