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On my system, `getconf ARG_MAX` is over 2m.

I have seen some heinously long cmdline strings, but nothing close to that. Usually when invocations have creeped up into the O(1k) character limit at places I've worked, I've implemented a "yaml as cmdline args" option to just pass a config file instead.

Have you seen scenarios where this is actually limiting?

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Yes, if *.c expands to a string over 2m. Maybe that is a lot for .c files, but it may easily happen with .tiff and a folder full of images used for training a deep learning model, for example.

Thanks, this is interesting. I have done a lot of this sorta stuff (glob expanding giant directories) without a thought for this `ARG_MAX` libc parameter, but now I know I need to keep it in mind!

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