a decade or so ago, I ran into a problem where "yes" was already too fast, feeding it to apt-get install or something (in a context where we knew what the promp

a decade or so ago, I ran into a problem where "yes" was already too fast, feeding it to apt-get install or something (in a context where we knew what the prompts were doing and if anything unusual happened we'd fail other checks immediately) and it had some clever input buffering going on... that wasn't clever enough and locked up on getting a megabyte of yes'es on the first read() call.