May 2013
Beginner to intermediate
384 pages
7h 40m
English
book
Linux Shell Scripting Cookbook, Second Edition - Second Edition
by Shantanu Tushar, Sarath Lakshman
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Debugging the script
Debugging is one of the critical features that every programming language should implement to produce race-back information when something unexpected happens. Debugging information can be used to read and understand what caused the program to crash or to act in an unexpected fashion. Bash provides certain debugging options that every sysadmin should know. This recipe shows how to use these.
How to do it...
We can either use Bash's inbuilt debugging tools or write our scripts in such a manner that they become easy to debug, here's how:
- Add the
-xoption to enable debug tracing of a shell script as follows:$ bash -x script.shRunning the script with the
-xflag will print each source line with the current status. Note that you ...
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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.