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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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Chapter 2: Using Text Editors

There's just no way around the topic of this chapter, as system administrators edit text files daily. Therefore, we decided to cover three commonly used editors – vi, Vim, and nano. If you're more into GUI tools, make sure that you check gedit, although we won't cover that editor here as it's practically the same as using Notepad on Microsoft Windows. There are various reasons why these editors were chosen, but most importantly, they are installed out of the box on almost all Linux distributions, so they're the most common pre-installed editors. There are situations where additional software installation is not an option, such as air-gapped environments.

We will cover the following recipes in this chapter:

  • Learning the basics of the Vi(m) editor
  • Learning the basics of the nano editor
  • Going through the advanced Vi(m) settings
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