The same is true with signals, timers, filesystem notifications, etc. There are a few (redundant/duplicated with minor feature differences in triplicate, 'caus

The same is true with signals, timers, filesystem notifications, etc. There are a few (redundant/duplicated with minor feature differences in triplicate, 'cause it's Linux) file-ish abstractions over parts of those concepts, but those abstractions are neither the only, recommended, or most widely used means of accessing those functionalities.