Shellck Agent Skill
Run shellcheck on shell scripts after editing scripts or when debugging shell errors. Use for linting scripts in a repo (especially scripts/), catching issues like set -u with unset vars, bad subshell usage, or quoting mistakes.
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/instructa/agent-skills --skill shellckWhat comes with it
2 127 bytes besides the instructionThe instruction itself
7 sections, as written by the authorShellck
Overview
Provide a fast, repeatable shellcheck pass for repo scripts. Use this skill after editing shell scripts or when a script fails unexpectedly.
Workflow
1) Ensure shellcheck is installed.
2) From the repo root, run the helper script.
Quick start
Run against the default scripts/ directory:
$CODEX_HOME/skills/shellck/scripts/run_shellck.sh
Run against specific files or directories:
$CODEX_HOME/skills/shellck/scripts/run_shellck.sh scripts/perf-profiler
$CODEX_HOME/skills/shellck/scripts/run_shellck.sh scripts/ other/dir/some.sh
Behavior
- If no paths are provided, it scans
scripts/for shell scripts. - If paths are provided, it accepts files or directories and filters to shell scripts by extension or shebang.
- Exits non-zero on shellcheck failures.
Resources
scripts/
run_shellck.sh: shellcheck runner with sensible defaults and directory filtering.
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How to use it
Take instructa/shellck from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.