I just learned about shellcheck, a tool that reports on common mistakes in (Bourne) shell scripts. If you write shell scripts, you should definitely check out this static analyzer. You can try it out by pasting shell scripts into their website. It is open source software, so you can also download and use it to your heart’s content.
It even covers some of the issues identified in Filenames and Pathnames in Shell: How to do it Correctly. If you are interested in static analyzers for software, you can also see my Flawfinder home page which identifies many other static analysis tools.
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