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Linux Command Line and Shell Scripting Techniques

Linux Command Line and Shell Scripting Techniques

By : Vedran Dakic, Jasmin Redzepagic
4.4 (5)
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Linux Command Line and Shell Scripting Techniques

Linux Command Line and Shell Scripting Techniques

4.4 (5)
By: Vedran Dakic, Jasmin Redzepagic

Overview of this book

Linux Command Line and Shell Scripting Techniques begins by taking you through the basics of the shell and command-line utilities. You’ll start by exploring shell commands for file, directory, service, package, and process management. Next, you’ll learn about networking - network, firewall and DNS client configuration, ssh, scp, rsync, and vsftpd, as well as some network troubleshooting tools. You’ll also focus on using the command line to find and manipulate text content, via commands such as cut, egrep, and sed. As you progress, you'll learn how to use shell scripting. You’ll understand the basics - input and output, along with various programming concepts such as loops, variables, arguments, functions, and arrays. Later, you’ll learn about shell script interaction and troubleshooting, before covering a wide range of examples of complete shell scripts, varying from network and firewall configuration, through to backup and concepts for creating live environments. This includes examples of performing scripted virtual machine installation and administration, LAMP (Linux, Apache, MySQL, PHP) stack provisioning and bulk user creation for testing environments. By the end of this Linux book, you’ll have gained the knowledge and confidence you need to use shell and command-line scripts.
Table of Contents (19 chapters)
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Creating a current backup based on the user input for the backup source and destination

After making backup scripts via tar, we need to make a completely interactive script that asks for all of the details from us to be inputted with the keyboard. Let's learn how to make this happen!

Getting ready

If you followed the previous recipe, then you won't need anything new – the same requirements apply.

How to do it…

Our premise has changed somewhat this time around. We want a fully functional backup script, but one that doesn't use any static variables (like the previous one). Also, we want to be able to call this script at will, which is why we're using multiple questions to set up the necessary variables. Here's what the script should look like:

#!/bin/bash
# V1.0 / Jasmin Redzepagic / 01/11/2021 Initial script version 
# Distribution allowed under GNU Licence V2.0 
# This script does a custom backup, based on our arguments
# We need...

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