Book Image

Linux for System Administrators

By : Viorel Rudareanu, Daniil Baturin
Book Image

Linux for System Administrators

By: Viorel Rudareanu, Daniil Baturin

Overview of this book

Linux system administration is an essential aspect of maintaining and managing Linux servers within an organization. The role of a Linux system administrator is pivotal in ensuring the smooth functioning and security of these servers, making it a critical job function for any company that relies on Linux infrastructure. This book is a comprehensive guide designed to help you build a solid foundation in Linux system administration. It takes you from the fundamentals of Linux to more advanced topics, encompassing key areas such as Linux system installation, managing user accounts and filesystems, networking fundamentals, and Linux security techniques. Additionally, the book delves into the automation of applications and infrastructure using Chef, enabling you to streamline and optimize your operations. For both newcomers getting started with Linux and professionals looking to enhance their skills, this book is an invaluable hands-on guide with a structured approach and concise explanations that make it an effective resource for quickly acquiring and reinforcing Linux system administration skills. With the help of this Linux book, you’ll be able to navigate the world of Linux administration confidently to meet the demands of your role.
Table of Contents (21 chapters)
Part 1: Linux Basics
Part 2: Configuring and Modifying Linux Systems
Part 3: Linux as a Part of a Larger System

Basic shell commands

Here’s a rundown of some of the possible commands. For more information, see the man page for each command. Using the man command, you can view these online. Simply type man followed by the command name you wish to see (for example, if you want to learn more about the cat command, simply type man cat):

  • pwd: The pwd command can be used to determine which directory you are in. Its name is an abbreviation for print working directory. It provides us with the absolute path, which is the path that begins at the root. The root directory is the foundation of the Linux filesystem. It’s indicated by a forward slash (/). You can see the pwd command in use in the following screenshot:
Figure 2.1 – pwd command, showing the working directory

Figure 2.1 – pwd command, showing the working directory

  • mkdir: mkdir is the command to use when you need to make a new directory. Put mkdir packt on your command line to make a directory with that name. To list your created directory...