March 2002
Beginner
504 pages
10h 47m
English
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Hour 14. Functions
Shell functions provide a way of mapping a name to a list of commands. Functions are similar to subroutines and procedures in other programming languages. You can also think of them as miniature shell scripts, complete with exit codes and arguments. The main difference between a script and a function is that a new instance of the shell is started for a shell script, whereas functions run in the current instance of the shell.
This chapter is divided into the following two sections:
The first section introduces the syntax for defining functions and illustrates their use, whereas the second section covers more advanced topics relating to the interaction ...
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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.