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Learning Linux Shell Scripting

You're reading from   Learning Linux Shell Scripting Leverage the power of shell scripts to solve real-world problems

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Product type Paperback
Published in May 2018
Publisher Packt
ISBN-13 9781788993197
Length 332 pages
Edition 2nd Edition
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Author (1):
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Ganesh Sanjiv Naik Ganesh Sanjiv Naik
Author Profile Icon Ganesh Sanjiv Naik
Ganesh Sanjiv Naik
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Table of Contents (17) Chapters Close

Preface 1. Getting Started and Working with Shell Scripting FREE CHAPTER 2. Drilling Deep into Process Management, Job Control, and Automation 3. Using Text Processing and Filters in Your Scripts 4. Working with Commands 5. Exploring Expressions and Variables 6. Neat Tricks with Shell Scripting 7. Performing Arithmetic Operations in Shell Scripts 8. Automating Decision-Making in Scripts 9. Automating Repetitive Tasks 10. Working with Functions 11. Using Advanced Functionality in Scripts 12. System Startup and Customizing a Linux System 13. Pattern Matching and Regular Expressions with sed and awk 14. Taking Backup and Embedding Other Languages in Shell Scripts 15. Database Administration Using Shell Scripts 16. Other Books You May Enjoy

Exiting from the current loop iteration with the continue command

Using the continue command, it is possible to exit from the current iteration of the loop and resume the next iteration of the loop. We use the for, while, or until commands for loop iterations.

The following is the for_09.sh script for the loop with the continue command to skip a certain part of the loop commands:

#!/bin/bash 
for x in 1 2 3 
do 
    echo before $x 
    continue 1 
    echo after $x 
done 
exit 0 

Let's test the program:

$ chmod +x for_09.sh
$ ./for_09.sh

The following will be the output after executing the preceding commands:

    before 1
    before 2
    before 3
  

The following is the for_10.sh script in which we will check all files and directories. If the file is found, we will print the name. If the directory is found, we will skip further processing with the continue command. Take care...

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