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)

Useful tools and utilities

In this section, we will have a look at some tools and utilities that help Ubuntu Server administrators to manage their systems in the best way needs so that systems usability is boosted to its maximum.

NetHogs, a network monitoring tool

NetHogs is a network monitoring tool that helps you identify the program that consumes your bandwidth. It is a kind of top command, but it's for network. This tool is very useful when you are troubleshooting network issues such as what is hogging the Internet connection?.

To launch nethogs, you need to do it with root privileges by using sudo command, because it relies on libpcap to sniff the network, like most network monitoring tools.

The installation of nethogs is simple, you just need to run the following command:

sudo apt-get install nethogs

After the installation, you can start using it via the following command:

sudo nethogs network_interface_card (by default without using the NIC it will use eth0), for example: sudo nethogs...