Book Image

Mastering Ubuntu Server - Third Edition

By : Jay LaCroix
Book Image

Mastering Ubuntu Server - Third Edition

By: Jay LaCroix

Overview of this book

Ubuntu Server has taken data centers around the world by storm. Whether you're deploying Ubuntu for a large-scale project or for a small office, it is a stable, customizable, and powerful Linux distribution with innovative and cutting-edge features. For both simple and complex server deployments, Ubuntu's flexible nature can be easily adapted to meet to the needs of your organization. This third edition is updated to cover the advancements of Ubuntu 20.04 LTS and further train you to understand how to use Ubuntu Server, from initial deployment to creating production-ready resources for your network. The book begins with the concepts of user management, group management, and file system permissions. Continuing into managing storage volumes, you will learn how to format storage devices, utilize logical volume management, and monitor disk usage. Later, you will learn how to virtualize hosts and applications, which will include setting up QEMU & KVM, as well as containerization with both Docker and LXD. As the book continues, you will learn how to automate configuration with Ansible, as well as take a look at writing scripts. Lastly, you will explore best practices and troubleshooting techniques when working with Ubuntu Server that are applicable to real-world scenarios. By the end of this Ubuntu Server book, you will be well-versed in Ubuntu server’s advanced concepts and attain the required proficiency needed for Ubuntu Server administration.
Table of Contents (26 chapters)
24
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25
Index

Using symbolic and hard links

If you've used a graphical operating system for more than a week, you're probably more than familiar with the concept of shortcuts. Either on the desktop or within a menu, you will have shortcuts to files and applications. This can be a shortcut to your home or profile directory, a shortcut to an application, an individual file, and so on. We have the same concept in Linux.

With Linux, we can link files to other files, which gives us the ability to create our own shortcuts, which are effectively similar to shortcuts in graphical operating systems, but without the requirement of a GUI. This comes in the form of symbolic and hard links, which are two different methods in which we can link things. Symbolic and hard links are very similar, but to explain them, you'll first need to understand the concept of inodes.

An inode is a data object that contains metadata regarding files within your filesystem. Although a full walkthrough of...