> Sidetrack: I actually looked up what the point of arg0 even is since I failed to find any usecases some months back and found this answer[0]. Confused, and unsatisfied by the replies, I gave up trying to understand "why arg0?" as some sort of legacy functionality.

I struggle to think of how the answers provided here could be clearer or more satisfactory. Why write an article if you're going to half-ass your research? Why even mention this nothingburger sidetrack at all...? (Bait?)

[0] https://stackoverflow.com/questions/24678056/linux-exec-func...