Book Image

CompTIA Linux+ Certification Guide

By : Philip Inshanally
Book Image

CompTIA Linux+ Certification Guide

By: Philip Inshanally

Overview of this book

The Linux+ certification provides a broad awareness of Linux operating systems, while giving professionals an upper hand in the IT industry. With this certification, you’ll be equipped with the all-important knowledge of installation, operation, administration, and troubleshooting services. This CompTIA Linux+ Certification Guide will give you an overview of the system architecture. You’ll understand how to install and uninstall Linux distributions, followed by working with various package managers. You’ll then move on to manipulating files and processes at the command-line interface (CLI) and creating, monitoring, killing, restarting, and modifying processes. As you progress, you’ll be equipped to work with display managers and learn how you can create, modify, and remove user accounts and groups, as well as understand how to automate tasks. The last set of chapters will help you configure dates and set up local and remote system logging. In addition to this, you’ll explore different internet protocols, and delve into network configuration, security administration, Shell scripting, and SQL management. By the end of this book, you’ll not only have got to grips with all the modules you need to study for the LX0-103 and LX0-104 certification exams, but you’ll also be able to test your understanding with practice questions and mock exams.
Table of Contents (23 chapters)
19
Mock Exam - 1
20
Mock Exam - 2

The apt-get command

The Advanced Package Tool (APT) is a command-line tool that is used for easy interaction with the dpkg packaging system. APT is the ideal method used for managing software within Debian-based Linux distributions, such as Ubuntu. It manages dependencies effectively, maintains large configuration files, and properly handles upgrades and downgrades to ensure system stability. On its own, dpkg does not handle dependencies properly. apt-get performs installations, package searches, updates, and many other operations for packages available to your system. Keeping packages up to date is extremely important, as using out-of-date packages can lead to security issues on your system. The apt-get utility requires root privileges, similar to the dpkg utility.

First, before we make it perform in any software installation, it's always best practice to update the package...