January 2007
Intermediate to advanced
912 pages
27h 32m
English
book
UNIX: The Complete Reference, Second Edition, 2nd Edition
by Kenneth H. Rosen, Douglas A. Host, Rachel Klee, Richard R. Rosinski
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CHAPTER 20Shell Scripting
By now you are familiar with using the shell interactively to enter commands. In addition to being a command interpreter, however, the shell is a full-fledged programming language. A program written in the shell language (or, as some users would say, written “in shell”) is often called a shell script. A shell script is just a sequence of commands that have been saved in a file. In fact, any commands you might enter at the command line can be made into a script, and any script that you might write can also be executed just by entering the commands in the file at the command line. This makes basic shell programming very easy to learn, even if you have never programmed before. The shell configuration files (such as your ...
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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.