How do I install ShellCheck?

ShellCheck can be installed via Homebrew (`brew install shellcheck`), apt (`apt-get install shellcheck`), or from source by cloning the repository, running `make build`, and `make install`. Verify the installation with `shellcheck --version`.

What are the main categories of ShellCheck error codes?

ShellCheck errors are grouped into four ranges: SC1000-1099 for parser errors, SC2000-2099 for general shell issues, SC2100-2199 for quoting issues, and SC3000-3999 for POSIX compliance issues.

How do I configure ShellCheck for my project?

Create a `.shellcheckrc` file in your project to set the target shell, enable optional checks, disable specific warnings, and toggle external-sources. You can also use environment variables like `SHELLCHECK_SHELL`, `SHELLCHECK_STRICT`, and `SHELLCHECK_CONFIG` to set defaults.

How do I suppress a specific ShellCheck warning?

You can suppress warnings inline using `# shellcheck disable=SC2086` comments in your script, or per-source-directive with `# shellcheck source=./helper.sh` to handle sourced-file false positives.

What output formats does ShellCheck support?

ShellCheck supports human-readable output (default), `--format=gcc` for CI/CD tooling, `--format=json` for programmatic parsing, and `--format=quiet` which produces no output but returns a non-zero exit code if issues are found.

Skill

Configure ShellCheck for Code Quality

Name: ShellCheck Configuration and Static Analysis
Availability: OnlineOnly
Author: Antigravity

ShellCheck Configuration and Static Analysis is a static analysis tool that detects problematic patterns in Bash, sh, dash, ksh, and POSIX shell scripts

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out of 100

Updated 4 days ago

Source checked Sep 19, 2026

Version 17.5.0

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Why it matters

Enhance your shell script quality by leveraging ShellCheck for comprehensive static code analysis. This asset provides guidance on configuration, integration into CI/CD pipelines, and understanding common error codes to enforce best practices and catch pitfalls.

Outcomes

What it gets done

Set up ShellCheck linting in CI/CD pipelines.

Analyze existing shell scripts for potential issues.

Configure ShellCheck rules and suppress false positives.

Integrate ShellCheck into development workflows and pre-commit hooks.

Install

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Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.

Run in your project directory:

curl -fsSL https://spark.entire.vc/get/ag-shellcheck-configuration | bash

After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.

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Overview

ShellCheck Configuration and Static Analysis

ShellCheck is a static analysis tool that analyzes shell scripts and detects problematic patterns. It supports Bash, sh, dash, ksh, and other POSIX shells, providing over 100 different warnings and errors with configuration for target shell and flags. Use ShellCheck when you need to analyze shell scripts in Bash, sh, dash, ksh, and other POSIX shells. It integrates with editors and CI/CD systems.

What it does

ShellCheck Configuration and Static Analysis is a static analysis tool that analyzes shell scripts and detects problematic patterns. It provides over 100 different warnings and errors across multiple shell dialects including Bash, sh, dash, ksh, and other POSIX shells.

When to use - and when NOT to

Use ShellCheck when you need to analyze shell scripts written in Bash, sh, dash, ksh, and other POSIX shells. The source material indicates it integrates with editors and CI/CD systems.

Do not use ShellCheck for non-shell scripting languages.

Inputs and outputs

You provide shell script files written in Bash, sh, dash, ksh, or other POSIX shells. ShellCheck supports configuration for target shell and flags. The tool detects problematic patterns and provides warnings and errors.

Integrations

ShellCheck integrates with editors and CI/CD systems. The tool supports configuration for target shell selection and flags.

Who it's for

This tool is for users who write or maintain shell scripts in Bash, sh, dash, ksh, and other POSIX shells and want to detect problematic patterns through static analysis.

Source README

ShellCheck is a static analysis tool that analyzes shell scripts and detects problematic patterns. It supports:

Bash, sh, dash, ksh, and other POSIX shells
Over 100 different warnings and errors
Configuration for target shell and flags
Integration with editors and CI/CD systems

FAQ

Common questions

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