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Linux Shell Scripting Cookbook, Second Edition

You're reading from   Linux Shell Scripting Cookbook, Second Edition Don't neglect the shell – this book will empower you to use simple commands to perform complex tasks. Whether you're a casual or advanced Linux user, the cookbook approach makes it all so brilliantly accessible and, above all, useful.

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Product type Paperback
Published in May 2013
Publisher Packt
ISBN-13 9781782162742
Length 384 pages
Edition 2nd Edition
Tools
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Toc

Table of Contents (16) Chapters Close

Linux Shell Scripting Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
1. Shell Something Out FREE CHAPTER 2. Have a Good Command 3. File In, File Out 4. Texting and Driving 5. Tangled Web? Not At All! 6. The Backup Plan 7. The Old-boy Network 8. Put on the Monitor's Cap 9. Administration Calls Index

Spell checking and dictionary manipulation


Most of the Linux distributions come with a dictionary file along with them. However, I find very few people to be aware of the dictionary file and hence, few make use of them. There is a command-line utility called aspell that functions as a spell checker. Let's go through a few scripts that make use of the dictionary file and the spell checker.

How to do it...

The /usr/share/dict/ directory contains some of the dictionary files. Dictionary files are text files that contain a list of dictionary words. We can use this list to check whether a word is a dictionary word or not.

$ ls /usr/share/dict/ 
american-english  british-english

To check whether the given word is a dictionary word, use the following script:

#!/bin/bash
#Filename: checkword.sh
word=$1
grep "^$1$" /usr/share/dict/british-english -q 
if [ $? -eq 0 ]; then
  echo $word is a dictionary word;
else
  echo $word is not a dictionary word;
fi

The usage is as follows:

$ ./checkword.sh ful ...
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