July 2017
Beginner
208 pages
3h 7m
English
Content preview from Linux Shell Scripting BootcampBecome 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,
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Chapter 3. Using Loops and the sleep Command
This chapter shows how to use loops to perform iterative operations. It also shows how to create a delay in a script. The reader will learn how to use loops and the sleep command in a script.
Topics covered in this chapter are as follows:
- Standard
for,while, anduntilloops. - Nesting of loops, and how not to get confused.
- Introduce the
sleepcommand and how it is used to cause a delay in a script. - Go over a common pitfall of using
sleep.
Using loops
One of the most important features of any programming language is the ability to perform a task, or tasks, a number of times and then stop when an ending condition is met. This is accomplished by using a loop.
The next section shows an example of a very simple ...
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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.
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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.