ShellCheck

Static analysis tool that finds bugs in bash and sh shell scripts

ShellCheck analyzes shell scripts and points out syntax issues, semantic problems, and subtle pitfalls such as unquoted variables, with explanations for each warning. It can be used online, from the command line, or in editors and CI.

Key features

Detects quoting, globbing, and syntax issues
Explanations and wiki page for every warning
Online checker plus CLI
Integrates with editors and CI

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