March 2002
Beginner
504 pages
10h 47m
English
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Dealing with Signals
A program can deal with a signal in three ways:
Do nothing and let the default action occur. This is the simplest method for a program to deal with a signal because it requires no extra code.
Ignore the signal and continue executing. This method is not the same as doing nothing because ignoring a signal requires the program to have some code that explicitly ignores the signal.
Catch the signal and perform some signal-specific commands. This method requires the program to define a function that is executed when a signal is received. This is the most complex and powerful method of dealing with a signal.
The first method is the default behavior for all shell scripts. All the scripts that you have looked at thus far handle signals ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.