Book Image

Mastering Linux Administration

By : Alexandru Calcatinge, Julian Balog
Book Image

Mastering Linux Administration

By: Alexandru Calcatinge, Julian Balog

Overview of this book

Linux plays a significant role in modern data center management and provides great versatility in deploying and managing your workloads on-premises and in the cloud. This book covers the important topics you need to know about for your everyday Linux administration tasks. The book starts by helping you understand the Linux command line and how to work with files, packages, and filesystems. You'll then begin administering network services and hardening security, and learn about cloud computing, containers, and orchestration. Once you've learned how to work with the command line, you'll explore the essential Linux commands for managing users, processes, and daemons and discover how to secure your Linux environment using application security frameworks and firewall managers. As you advance through the chapters, you'll work with containers, hypervisors, virtual machines, Ansible, and Kubernetes. You'll also learn how to deploy Linux to the cloud using AWS and Azure. By the end of this Linux book, you'll be well-versed with Linux and have mastered everyday administrative tasks using workflows spanning from on-premises to the cloud. If you also find yourself adopting DevOps practices in the process, we'll consider our mission accomplished.
Table of Contents (20 chapters)
Section 1: Linux Basic Administration
Section 2: Advanced Linux Server Administration
Section 3: Cloud Administration


In this chapter, we explored some of the essential concepts related to managing users and groups in Linux. We learned about file and directory permissions and the different access levels of a multiuser environment. For each main topic, we focused on basic administrative tasks, providing various practical examples and using typical command-line tools for everyday user access and permission management operations.

Managing users and groups, and the related filesystem permissions that come into play, is an indispensable skill of a Linux administrator. The knowledge gained in this chapter will, we hope, put you on track to becoming a proficient superuser.

In the following chapter, we continue our journey of mastering Linux internals by exploring processes, daemons, and inter-process communication mechanisms. An important aspect to keep in mind is that processes and daemons are also owned by users or groups. The skills learned in this chapter will help us navigate the related...