Book Image

Ubuntu Server Essentials

By : Abdelmonam Kouka
Book Image

Ubuntu Server Essentials

By: Abdelmonam Kouka

Overview of this book

Ubuntu is a Debian-based Linux operating system built on top of the Debian architecture. It is used to make operating systems for multiple platforms, including phones, desktops, TVs and mobiles. It has made some serious progress in the realms of efficiency and user friendliness. With evolving technology trends, demands on software have changed, with more and more skilled users. Over the past few years, services such as Facebook, Twitter, and push notifications on smartphones mean that users are used to being up to date with everything that happens all the time. With SignalR, the applications stay connected and will generate notifications when something happens either from the system or by other users. This provides new opportunities for the system administrators, to enter this new and exciting world of real-time application development. This is a concise and a cost-friendly guide, packed with up-to-date essentials on Ubuntu Server fundamentals. It will guide you through deploying and configuring Ubuntu servers in your office environments. You’ll start by installing Ubuntu Server, then move to the most useful aspect —the command-line interface inside it. You’ll extend your knowledge by learning how to administrate and configure Ubuntu Server. You will also see how to deploy services on Ubuntu Server and find out how to secure it. You’ll get to grips with the virtualization and cloud computing facilities provided by Ubuntu, and finally, you’ll gain some very useful tips.
Table of Contents (13 chapters)

Administering using the command line

Entire books have been written on command-line tools and how to use them effectively. In this section, we will have a look at the essentials one that we need. If you are an experienced administrator, feel free to skip to the next section. Just keep in mind the following note, that's all.


Note that unlike other Linux distributions, Ubuntu doesn't allow the use of the super user as a root by default; it is disabled for security reasons. So, when you would like to run a command with the root privileges, you should run it with the sudo keyword before doing so. You will be asked to enter your password (the one that you used when installing the Ubuntu Server). For example, if you would like to edit the /etc/hosts file, run the following code:

abdelmonam@abdelmonam-tactic:~$ sudo vi /etc/hosts
[sudo] password for abdelmonam:

If you would like to activate the root account (which is not recommended) or allow other users to run sudo, you can follow the detailed...