Shellcheck

Shell script static analysis and linting. USE WHEN shellcheck, lint shell, bash lint, sh lint, script analysis, shell errors, SC codes, shell best practices. Comprehensive shell script validation with CI/CD integration.

Software Engineering|v1|Updated 7/2/2026|GitHub source

MCP get_skill({ skillId: "shellcheck-03d1db91" })

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# ShellCheck - Shell Script Static Analysis

**Auto-routes when user mentions shellcheck, shell linting, bash script analysis, or SC error codes.**

## Overview

ShellCheck is a GPLv3-licensed static analysis tool that identifies bugs in bash/sh shell scripts. It detects:
- Syntax errors and parsing issues
- Semantic problems causing unexpected behavior
- Quoting issues and word splitting bugs
- POSIX compatibility warnings
- Style and best practice violations

## Voice Notification

**When executing a workflow, do BOTH:**

1. **Send voice notification**:
   ```bash
   curl -s -X POST http://localhost:8888/notify \
     -H "Content-Type: application/json" \
     -d '{"message": "Running the WORKFLOWNAME workflow from the ShellCheck skill"}' \
     > /dev/null 2>&1 &
   ```

2. **Output text notification**:
   ```
   Running the **WorkflowName** workflow from the **ShellCheck** skill...
   ```

## Workflow Routing

| Workflow | Trigger | File |
|----------|---------|------|
| **Analyze** | "shellcheck this", "lint script", "check shell" | `Workflows/Analyze.md` |
| **Fix** | "fix shell errors", "apply shellcheck fixes" | `Workflows/Fix.md` |
| **Setup** | "setup shellcheck", "configure shellcheck" | `Workflows/Setup.md` |
| **Explain** | "explain SC2086", "what is SC code" | `Workflows/Explain.md` |

## Quick Reference

### Basic Usage

```bash
# Check a script
shellcheck myscript.sh

# Specify shell dialect
shellcheck -s bash myscript.sh

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