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Essential Linux Commands

Essential Linux Commands

By : Paul Olushile
5 (12)
Buy this Book
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Essential Linux Commands

Essential Linux Commands

5 (12)
By: Paul Olushile
Buy this Book

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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Preface
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Preface
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Who this book is for
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What this book covers
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To get the most out of this book
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Conventions used
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Get in touch
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1
Part 1:Server Installations and Management Commands
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Part 1:Server Installations and Management Commands
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2
Chapter 1: Getting a CentOS Server Up and Running
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Chapter 1: Getting a CentOS Server Up and Running
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Downloading the OS installation file
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Downloading and setting up a hypervisor
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Package installation commands
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Information commands
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Summary
3
Chapter 2: Linux User and Group Commands
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Chapter 2: Linux User and Group Commands
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useradd, userdel, and usermod
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Files, directories, and permission commands
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groupdel, groupmod, groupadd, and grpck
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pwck, chage, and passwd commands
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find, locate, and whereis commands
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Summary
4
Chapter 3: File Compression and Archival Commands
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Chapter 3: File Compression and Archival Commands
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gunzip and gzip
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tar, rar, and unrar
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zip and unzip
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bunzip2, bzip2, and more
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Summary
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Part 2:Frequently Used Commands – Part 1
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Part 2:Frequently Used Commands – Part 1
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Chapter 4: Format and Disk Space Commands
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Chapter 4: Format and Disk Space Commands
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The history and evolution of disk formatting and partitioning in Linux
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Steps to create a partition
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fdisk, lsblk, df, and du
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Displaying (dpkg and rpm) package space
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mkfs, mke2fs, fdformat, and more
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Summary
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Chapter 5: Linux Permissions Commands
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Chapter 5: Linux Permissions Commands
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Why permission commands?
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Types of permissions
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chmod
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chown
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Utilizing absolute paths in commands
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chgrp
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umask
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sudo
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Summary
8
Chapter 6: Filesystem Mount and Manipulation Commands
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Chapter 6: Filesystem Mount and Manipulation Commands
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Linux mount commands
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The mount command
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The umount command
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The fuser command
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File manipulation using cat, grep, and more
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Summary
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Part 3:Frequently Used Commands – Part 2
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Part 3:Frequently Used Commands – Part 2
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Chapter 7: File Content and Conversion Commands
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Chapter 7: File Content and Conversion Commands
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The tail and file commands
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The convert command
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Using dos2unix to convert MS-DOS files to Unix
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Using unix2dos to convert Unix files to MS-DOS
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The recode command
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Summary
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Chapter 8: Linux SWAP Commands
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Chapter 8: Linux SWAP Commands
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The swapon command
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The free command
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Summary
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Chapter 9: Linux Monitoring and Debugging Commands
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Chapter 9: Linux Monitoring and Debugging Commands
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The top command
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The ps command
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The pstree command
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The strace command
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The watch command
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The smartctl command
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The uptime command
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The lsof command
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The lsmod command
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The last reboot command
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The last command
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The w command
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The vmstat command
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The kill command
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The pkill command
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Summary
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Chapter 10: Linux IPTABLES and Network Commands
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Chapter 10: Linux IPTABLES and Network Commands
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iptables -t ACCEPT
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iptables -t DROP
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ifconfig, ip, route, and netstat
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Hostname and nslookup
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host
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Summary
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Chapter 11: File Transfer, Downloading, and Managing Log Files
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Chapter 11: File Transfer, Downloading, and Managing Log Files
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Copying files into remote systems using netcat and socat
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Downloading files with wget and curl
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Exploring common log files
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Summary
15
Part 4:Linux Security and the Cloud
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Part 4:Linux Security and the Cloud
16
Chapter 12: Exploring Linux Security
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Chapter 12: Exploring Linux Security
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Utilizing enforcing and permissive modes
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Enabling or disabling SELinux Boolean values
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Locking user accounts
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Securing SSH
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Summary
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Chapter 13: Linux in the Cloud
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Chapter 13: Linux in the Cloud
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Creating EC2 instances on AWS
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Connecting to a created EC2 instance using PuTTY
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Working on our EC2 instance
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Summary
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Index
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Index
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Why subscribe?
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Other Books You May Enjoy
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Other Books You May Enjoy
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Who this book is for

This book is designed for a diverse audience of technology enthusiasts, professionals, and learners. It caters to a range of individuals who can benefit from a comprehensive guide to Linux command-line proficiency:

  • Linux enthusiasts: If you’re passionate about Linux and want to deepen your understanding of its command-line interface, this book provides a wealth of knowledge to further your expertise.
  • Developers: Whether you’re a software developer, web developer, or programmer, understanding Linux commands is invaluable for your work. This book helps you harness the power of the command line to improve your productivity.
  • IT professionals: If you work in the IT industry, this book offers insights into Linux commands that can enhance your problem-solving capabilities and broaden your skill set.
  • Students and aspiring professionals: If you’re studying computer science or pursuing a career in IT, this book serves as a foundational resource to help you grasp the fundamentals of Linux commands.
  • Anyone curious about Linux: If you’ve been curious about Linux and want to explore its command-line capabilities, this book is a user-friendly starting point.

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