[gdal-dev] Standardize gdal-utils scripts return code for "no arguments"

[Robert Coup]

Hi Matt,

On Wed, 27 Apr 2022 at 18:27, <Matt.Wilkie at yukon.ca> wrote:

>
>
> Since return 2 is the default for argparse then it seems to we should do
> the same for all the python utils?
>

In my experience 2 is a common exit code when missing/invalid arguments are
passed to a process in the unix-ey world, but it's not standardised or
universal.

Rob :)
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