Packt+ | Advance your knowledge in tech

0

Explore Products

Best Sellers

New Releases

Books

Videos

Audiobooks

Free Learning

Linux Shell Scripting Bootcamp

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

Product type Paperback

Published in Jul 2017

Publisher Packt

ISBN-13 9781787281103

Length 208 pages

Edition 1st Edition

Tools

Linux

Concepts

Shell Scripting

Author (1):

James K Lewis

View More author details

Table of Contents (12) Chapters

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

Automatic backups

Now for a bit of free programming advice, making automatic backups of files was mentioned in Chapter 4, Creating and Calling Subroutines. I strongly suggest you use something like this when you are writing anything that is even slightly complicated. There is nothing more frustrating than to be working on your program or script and have it going pretty well, only to make a few changes and have it fail in some bizarre fashion. You had it working a few minutes ago and then wham! It has a fault and you can't figure out what change caused it. If you don't have a numbered backup you could literally spend hours (maybe days) trying to find the bug. I have seen people spend hours backing out every change until the problem was found. Yes, I have done it too.

Obviously if you have a numbered backup you can simply go back and find the latest one that doesn't have the fault. You can then diff the two versions and probably find the error really fast. Without a numbered backup, well you...

The rest of the chapter is locked

Register for a free Packt account to unlock a world of extra content!

A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.

Unlock this book and the full library FREE for 7 days

Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of

Start free trial

Renews at $19.99/month. Cancel anytime

Authors (1)

James K Lewis

James K Lewis

James Kent Lewis has been in the computer industry for over 35 years. He started out writing BASIC programs in high school and used punch cards in college for his Pascal, Fortran, COBOL, and assembly language classes. He himself learned the C programming language by writing various utilities, including a fully-functional text editor, which he uses everyday. He started out using DOS and AIX, and then OS/2. Linux is now his operating system of choice. Jim has worked in the past for several companies, including IBM, Texas Instruments, Tandem, Raytheon, Hewlett-Packard, and others. Most of these positions dealt with low-level device drivers and operating system internals. In his spare time he likes to create video games in Java.He has written articles for IBM Developer Works and has one patent.

See other products by James K Lewis

Other recommended products

Related to this chapter

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Mastering Linux Shell Scripting

Mastering Linux Shell Scripting

Shell scripting is a quick method to prototype a complex application or a problem by automating tasks when working on Linux-based systems. This book will make use of both simple one-line commands and command sequences and complex problems can be solved with ease, from text processing to backing up sysadmin tools.

Apr 2018 9h 28m

Personalised recommendations for you

Based on your interests and search pattern

Mastering PowerShell Scripting

Mastering PowerShell Scripting

PowerShell scripts provides a convenient method for automating tasks, using them proficiently can be challenging. This all-inclusive guide begins at the basics and covers advanced concepts, equipping you with tips to become an expert in PowerShell Core 7.3 scripting.

May 2024 27h 32m

Network Automation with Nautobot

Network Automation with Nautobot

This book will help you understand why a network source of truth is needed for long-term network automation success, which will in turn save you hundreds of hours in deploying and integrating Nautobot into network automation.

May 2024 27h 12m

NGINX HTTP Server

NGINX HTTP Server

Explore the power of NGINX with this guide covering an array of essential practical topics, including securing your infrastructure with automatic TLS certificates, placing NGINX in front of your existing applications, and much more.

May 2024 8h 44m

Mastering Azure Virtual Desktop

Mastering Azure Virtual Desktop

This updated edition will help you plan an Azure Virtual Desktop Architecture, implement its infrastructure, and manage its access and security. With content aligned with the exam objectives, it'll help you ace the Microsoft AZ-140 exam.

Jul 2024 23h 56m

Learn Ansible will teach you how to write Ansible Playbooks for deploying simple apps. This updated edition covers the latest Ansible features, helping you confidently implement Ansible in your daily workflows.

May 2024 13h 48m

HashiCorp Terraform Associate (003) Exam Guide

HashiCorp Terraform Associate (003) Exam Guide

This book will help you explore HashiCorp Terraform and prepare for Associate (003) certification, from understanding core concepts to advanced modules. You'll gain hands-on expertise, troubleshoot with confidence, and more.

May 2024 11h 28m

Kubernetes – An Enterprise Guide

Kubernetes – An Enterprise Guide

Navigate the complexities of Kubernetes and fully leverage its capabilities for enterprise applications. This edition dives into advanced deployments, groundbreaking techniques, and insights that will elevate your skills and redefine your expertise.

Aug 2024 22h 44m

Atlassian DevOps Toolchain Cookbook

Atlassian DevOps Toolchain Cookbook

Master setting up a DevOps toolchain using Atlassian tools and Open DevOps as a framework with this recipe-driven guide to automated testing, integration, deployment, observability, and incident management for streamlining development processes.

Jul 2024 16h 48m

AWS Certified Developer Associate Certification and Beyond

AWS Certified Developer Associate Certification and Beyond

This is your guide to passing the challenging AWS Certified Developer – Associate certification exam and setting yourself up for a rewarding career. Through a sample project, it explains how to design, architect, and implement applications on AWS.

Jul 2024 23h 40m

Implementing GitOps with Kubernetes

Implementing GitOps with Kubernetes

This book provides step-by-step tutorials and hands-on examples for effectively implementing GitOps practices in your Kubernetes deployments. You'll learn how to automate, monitor, and secure your infrastructure for efficient application delivery.

Aug 2024 14h 48m