ShellCheck

Judgement

What it is

Developer tool

What it does

A static analysis tool that warns about bugs, quoting mistakes and portability problems in bash and sh scripts, with an explanation page for every warning.

Adopt it when

Your repositories contain shell scripts, especially in CI or deployment, and you want common mistakes caught before they run.

Watch out

It is GPL-3.0 and maintained mostly by one person, though using it as a linter places no licence burden on your scripts.

Ready for

Production-ready

Runs as

Command line

Built with

Haskell

How established

Established: started 14 years ago, latest release v0.11.0.

What the license allows

Use inside your business is unrestricted, but anything you distribute that includes it must be released under the same license.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: ShellCheck → GHC → GCC → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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