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Linux Shell Scripting Bootcamp

You're reading from   Linux Shell Scripting Bootcamp The fastest way to learn Linux shell scripting

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781787281103
Length 208 pages
Edition 1st Edition
Tools
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Author (1):
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James K Lewis James K Lewis
Author Profile Icon James K Lewis
James K Lewis
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Toc

Table of Contents (12) Chapters Close

Preface 1. Getting Started with Shell Scripting FREE CHAPTER 2. Working with Variables 3. Using Loops and the sleep Command 4. Creating and Calling Subroutines 5. Creating Interactive Scripts 6. Automating Tasks with Scripts 7. Working with Files 8. Working with wget and curl 9. Debugging Scripts 10. Scripting Best Practices Index

Introducing the wget program


You may have already heard about or even used the wget program. It is a command line utility that can be used to download files from the Internet.

Here is a screenshot showing wget in its most simplest form:

wget options

In the output you can see that wget downloaded the index.html file from my jklewis.com website.

This is the default behavior of wget. The standard usage is:

  wget [options] URL

where URL stands for Uniform Resource Locator, or address of the website.

Here is just a short list of the many available options with wget:

Parameter

Explanation

-o

log file, messages will be written here instead of to STDOUT

-a

same as -o excepts it appends to the log file

-O

output file, copy the file to this name

-d

turn debugging on

-q

quiet mode

-v

verbose mode

-r

recursive mode

Let's try another example:

The -o option was used in this case. The return code was checked and a code of 0 means no failure. There was no output because it was directed...

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