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Documenting how an application works, its purpose, and its intended usage is really important, even if it is just a simple shell script we are talking about. To ease code maintenance in the most basic cases, documentation can be embed directly inside scripts. In this tutorial we learn how to include Pearl’s Plain Old Documentation syntax (POD) in bash scripts, and how to convert it to various formats using pod2 utilities such as pod2man and pod2html.
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