You are right but I was talking about the case when no input was there to be read since the call to `read` and also about this specific application: > Blocking

You are right but I was talking about the case when no input was there to be read since the call to `read` and also about this specific application: > Blocking when there is no input is completely ok in this use case as there is nothing better to do instead of waiting for input. (Emphasis is new.)