[cs631apue] signals revisited

[Jan Schaumann]

Hello,

In order to revisit Signals and better understand how
parent-child relationships, controlling terminals, and
signal communications work, I recommend playing around
with this exercise:

https://stevens.netmeister.org/631/siggot-exercise.html

The exercise intentionally glosses over a number of
issues that you will run into when you try to
implement it.  See how you can make it work...

-Jan