# Language Shell

> Shell scripting standards and safety practices. Use when language shell guidance is required or when selecting Shell as a thin wrapper or OS-near glue layer.

- Skill: `majiayu000/language-shell` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/language-shell`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/language-shell/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/language-shell

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## Key Execution Capabilities

### Script Validation

- Run syntax checking: `bash -n`, `sh -n`, `zsh -n`
- Execute static analysis with shellcheck
- Validate shebang lines and strict mode compliance
- Check for security vulnerabilities and coding violations

### Tool Integration

- Use `shellcheck` for comprehensive linting
- Leverage shell-specific parameter expansion features
- Apply POSIX vs bash vs zsh feature detection
- Implement platform-specific compatibility checks

### Execution Context

- Process script files from filesystem layer
- Generate structured reports with line-by-line findings
- Create minimal, rule-compliant patches for violations
- Maintain separation between governance rules and execution tools

## Error Handling

This skill provides execution-layer error handling for shell script analysis:
- Invalid file formats or permissions
- Tool availability issues (missing shellcheck, etc.)
- Platform-specific limitations
- Syntax validation failures

## Usage Notes

- Always delegate to governance rules for policy decisions
- Focus on concrete tool execution and result processing
- Provide deterministic, tool-first analysis results
- Maintain separation between rule definition and rule application