ok i gave tools/test/gpioevents/
another look seems like i'm able to use and understand it note, this is not the first useful thing buried deep in src and possible stopped working over time. last one was wifi events debug but how to like put things somewhere visible? it doesn't necessarily need to compile with world maybe into manpages people would see? i don't know how many people use this but if they don't see it they don't use for sure think of this as advertisement for feature or whole os. actually i have to look if code from 2014 from also works it won't be issue if such code was added and kept up to date unsure who will maintain it tho
