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

Software installation, packages, and dependencies

The definition of a software package is quite broad. In the early days of computing, when computers were exclusively used to solve mathematical problems, most programs were written completely from scratch to run on a specific computer, so there was no need for installation and thus no need for the concept of software packaging. For a long time afterward, software was still synonymous with executable files. Installing a software product that consists of a single executable file is trivial —just copy it to the target computer.

Such software certainly exists today. For example, the maintainers of jq (a popular tool for extracting data from JSON files) provide standalone, statically linked executables that combine the program and all libraries it needs into a monolithic file and can run on any Linux system, so any user can just download it from its website ( and start using it.