July 2018
Beginner
264 pages
8h 9m
English
Content preview from Bash Cookbook
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Getting ready
Select is already a part of the Bash shell, but it has a few less than obvious points. Select relies on three variables:
- PS3: The prompt that's echoed to the user before the menu is created
- REPLY: The index of the item selected from the array
- opt: The value of the item selected from the array—not the index
Technically, opt is not mandatory, but it is the value of the element being iterated by Select in our example. You could use another name and call it element, for example.
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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.