Is there a standard way to list expected command line arguments?

Question

I don't mean a man page or equivalent.

You know how, when you start command line applications with insufficient or invalid command line arguments, they often output a one-liner showing the command line arguments they expected, then quit.

Is there a standard way to write this one-liner? (i.e. Which command line arguments are required, which are optional, which must be numeric, and probably other constraints that I haven't thought of)

Answer 1

Yes. See also.