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Essential Linux Commands

Essential Linux Commands

By : Paul Olushile
5 (12)
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Essential Linux Commands

Essential Linux Commands

5 (12)
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)
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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

fdisk, lsblk, df, and du

Among the utilities used in Linux systems to manage filesystems, there’s fdisk, lsblk, df, and du. Each of these utilities performs a specific function in disk management, and their proper use is essential to ensure the efficient functioning of the system.

We introduced fdisk, a command-line utility that’s used to partition disks, previously. It allows us to create and modify partition tables, enabling administrators to organize storage space as required. Partitioning is essential for efficiently utilizing storage space, improving system performance, and simplifying the management of the filesystem. fdisk can create different types of partitions, including primary, logical, and extended partitions. Additionally, it can be used to change the partition size, delete partitions, and modify partition types. Without fdisk, managing and organizing the filesystem would be complex, cumbersome, and prone to errors. We can call this command by simply...

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