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Shellcheck

Shellcheck is a free, open-source developer tool for Windows, macOS and Linux. ShellCheck, a static analysis tool for shell scripts. It has 40,258 GitHub stars and is released under the GPL-3.0 license. Its source code is on GitHub at koalaman/shellcheck.

github.com/koalaman/shellcheck (opens in a new tab)

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About Shellcheck

ShellCheck is a GPLv3 tool that gives warnings and suggestions for bash/sh shell scripts: See the gallery of bad code for examples of what ShellCheck can help you identify!

Install Shellcheck

Package names found in the project's README. Each links to its package page so you can check the publisher first.

Homebrew (macOS)
brew install shellcheck

Package page (opens in a new tab)

winget (Windows)
winget install koalaman.shellcheck

Package page (opens in a new tab)

Chocolatey (Windows)
choco install shellcheck

Package page (opens in a new tab)

AUR (Arch Linux)

shellcheck-bin on the AUR (opens in a new tab)

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FAQ

Shellcheck FAQ

Still curious? Email info@appsgit.com.

Is Shellcheck free and open source?

Yes. Shellcheck's source code is public on GitHub under the GPL-3.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.

How do I install Shellcheck?

Homebrew: brew install shellcheck, winget: winget install koalaman.shellcheck, Chocolatey: choco install shellcheck and the AUR package shellcheck-bin. The commands are on this page. Installers are also on its GitHub Releases page (latest: v0.11.0).

Is Shellcheck still maintained?

The repository's most recent commit was on Oct 26, 2026. appsgit only lists apps whose repository had a commit in the last six months.