信号发送字符串到子进程

Question

For my assignment I'm given the question to have a parent process send "user inputted" lines of text VIA signal to the child and have it print out the line of text.

I'm seriously confused. I've read the whole chapter in my book on signals and it seems for the most part they are only used for termination, pauses, alerts. I originally thought through the alerts I could do that, But I'm honestly unsure. Is there a way to pass data through signals.

Answer 1

POSIX signals (what we call signals in UNIX speak), are just events, so the only data you are sending is that it happened. This does of course not prevent people from talking about signals in other contexts or with different meanings...