January 2004
Intermediate to advanced
432 pages
7h 49m
English
Content preview from Linux Shell Scripting with BashBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Chapter 6. Expressions
An expression is a formula that calculates a value. Bash has several built-in commands and functions to compute expressions, and not all have the same syntax or features. In some cases there is more than one way to calculate the same expression. There are also many specialized features for use in rare cases. As a result, few Bash programmers have all the nuances memorized.
During one of my many conversations with the late professor and author F. Ray Skilton, we were discussing the use of pull-down menus as a tool not for making selections but as a memory aid for commands. He turned away from his Atari computer and asked me, “Have you learned enough computer languages to start forgetting the syntax of commands you haven't ...
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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.
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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.