Book Image

Essential Linux Commands

By : Paul Olushile
Book Image

Essential Linux Commands

By: Paul Olushile

Overview of this book

The role of a system administrator is ever-evolving, with the Linux command line at its core. This makes Linux command-line mastery an essential skill to demonstrate your ability to efficiently manage and maintain systems efficiently. Essential Linux Commands addresses a diverse range of topics, including package management, file manipulation, networking strategies, system monitoring, and diagnostic tools. Each command is intricately explained to eliminate any ambiguity, ensuring ease of implementation in real-world scenarios. This book explains how to use SELinux to maintain security, run Linux machines on AWS Cloud, and transfer and download files to remote systems. With the help of practical examples and use cases, you’ll not only gain a thorough understanding of a command’s syntax but also grasp its functional breadth and limitations. The book also explores commands frequently used by system administrators to check network card statistics and firewall rules. Whether you’re a beginner or an experienced administrator, this book is an invaluable resource, filling in the gaps in your skill set and helping you improve your skills and expertise in Linux administration.
Table of Contents (20 chapters)
1
Part 1:Server Installations and Management Commands
5
Part 2:Frequently Used Commands – Part 1
9
Part 3:Frequently Used Commands – Part 2
15
Part 4:Linux Security and the Cloud

Why permission commands?

By utilizing permission commands, administrators can enforce the principle of least privilege, granting users only the necessary permissions required to perform their tasks. This practice reduces the risk of unauthorized access or accidental modifications to critical files, minimizing the potential for data breaches and system compromises. With proper permissions in place, organizations can maintain control over their sensitive information and prevent unauthorized disclosure or alteration. Moreover, permission commands enable administrators to implement security policies that align with industry best practices and compliance regulations. For example, by restricting access to configuration files or system directories, administrators can protect system files from unauthorized modifications, ensuring system stability and preventing malicious activities. Additionally, by assigning appropriate ownership and group permissions, administrators can facilitate collaboration...