September 2018
Beginner
186 pages
4h 30m
English
Content preview from Bash Quick Start Guide
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Scripts, Functions, and Aliases
In the previous chapter, we explored some of the most important commands provided to you by the Bash shell and by a Unix system that implements the POSIX standard. These commands have many uses on their own, and they can additionally serve as the basis for making your own custom commands, to perform specific tasks that you need and remember them for convenience in the future.
This chapter explores three different types of custom commands that you can write to use in your Bash scripts or on the Bash command line:
- Aliases: Can expand a word into a command line string
- Functions: A way to write a command from a set of other commands, much more versatile than aliases
- Scripts: Take the form of programs in files ...
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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.