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koalaman

shellcheck

koalaman

A GPLv3 static analysis tool for shell scripts that provides warnings and suggestions for bash/sh scripts, helping identify syntax issues, semantic problems, and potential pitfalls.

v0.11.0
Published at
Aug 4, 2025
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The author no longer ships through GitHub Releases, but the repository is still active (last push 4d ago). Get the latest version from: Project homepage

Latest release

v0.11.0Aug 4, 2025, 12:27 AM
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README

Project Overview

ShellCheck is a GPLv3 static analysis tool for shell scripts that provides warnings and suggestions for bash/sh shell scripts.

Key Features

  • Points out and clarifies typical beginner syntax issues that cause cryptic error messages
  • Points out and clarifies intermediate semantic problems that cause strange behavior
  • Points out subtle caveats, corner cases, and pitfalls that may cause scripts to fail

Target Audience

  • Shell script writers
  • Developers who want to improve script quality and maintainability
  • System administrators and DevOps engineers

Quick Start

  • Web: Paste a script on shellcheck.net for instant feedback
  • Terminal: Run shellcheck yourscript for instant output
  • Editor integration: Supports Vim (ALE/Neomake/Syntastic), Emacs (Flycheck/Flymake), Sublime (SublimeLinter), and more

Core Advantages

  • Open-source and free (GPLv3)
  • Available via web, terminal, and editor integrations
  • Covers issues from beginner to advanced levels
  • Actively maintained by the community

System Requirements

  • OS: Cross-platform

Release history

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