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Linux Administration
LinuxLinux from the ground up: the boot process, the shell, files & permissions, users & groups, processes, networking, package management, LVM and the C build process.
- 01Rhel 9 Administration GuideA comprehensive summary of Red Hat Enterprise Linux 9 administration topics, including architecture, command-line basics, file systems, user management, services, and process monitoring.6 min read
Abdallah Shehawey
- 02Ubuntu Boot Process GuideWelcome to the Ubuntu Boot Process Guide! This document provides a comprehensive overview of the Ubuntu booting process, including detailed explanations of each step, diagram descriptions, practical…4 min read
- 03Linux Basic Commands GuideWelcome to the Linux Basic Commands Guide! This repository serves as a comprehensive resource for beginners and those who want to refresh their knowledge of essential Linux commands. Whether you're…4 min read
- 04Comprehensive Unix Shells GuideA deep, professional, and complete reference for the most popular Unix/Linux shells: csh, sh, ksh, tcsh, bash, zsh, and fish. This guide expands on history, architecture, scripting models,…3 min read
- 05Mastering Vim Deep & Practical GuideA complete, opinionated, and production-grade guide to Vim—from fundamentals to elite workflows. This document fills in all missing mental models, advanced mechanics, real-world patterns, and…6 min read
- 06Magic Numbers in Linux Deep Systems GuideA low-level, systems-oriented, production-grade guide to understanding how Linux determines file types using magic numbers. This document goes far beyond basic definitions and explains kernel vs…3 min read
- 07Wildcards & Globbing in Linux Deep Cli GuideA deep, practical, and system-level guide to understanding wildcards (globbing) in the Linux Command Line Interface. This guide goes far beyond basic usage to explain how globbing really works, how…3 min read
- 08Linux Users & Groups Deep Administration GuideA production-grade, systems-level guide to Linux users, groups, and identity management. This document does not repeat basic commands only—it explains how Linux models identities internally, how…3 min read
- 09Journaling in Linux Filesystems Deep Systems GuideA systems-level, production-grade guide to journaling in Linux filesystems. This document goes far beyond the basics to explain why journaling exists, how it works internally, what is (and is not)…4 min read
- 10Getopt & Getoptlong Deep System-level Option Parsing GuideThis guide is a second-level, professional deep dive into command-line option parsing in C using getopt and getoptlong. It does not repeat basic usage—instead it explains how these APIs work…4 min read
- 11Su Command in Linux Complete Guide with Environment VariablesThe su (substitute user / switch user) command is one of the oldest and most fundamental privilege-switching tools in Unix and Linux systems. It allows one user to temporarily become another user —…2 min read
- 12Linux File Permissions and Ownership Complete Practical GuideLinux is a multi-user system, and file permissions are the backbone of its security model. Every file and directory is protected by ownership rules that determine who can read, write, or execute it.2 min read
- 13Ubuntu Package Management Apt Complete GuidePackage management is the heart of Linux system maintenance. Ubuntu uses APT (Advanced Package Tool) to install, upgrade, remove, and manage software.1 min read
- 14Bash Scripting BasicsA guide explaining the fundamental concepts of Bash scripting.16 min read
- 15Linux File System EssentialsIn this file, we will explain the essentials of the Linux file system.14 min read
- 16Process and Thread ManagementA process is an instance of a computer program that is being executed. It's a self-contained execution environment with its own memory space, which includes the program code, data, and other…17 min read
- 17Session 10 : Introduction to Networking & the Application LayerThis document provides a basic overview of computer networking concepts and the application layer.73 min read
- 18Linux Networking Cli & Introduction to Yocto for Machine RoutingThis documentation covers essential concepts and commands for the Linux Networking Command Line Interface, specifically tailored for machine routing and embedded systems context.12 min read
- 19Comprehensive Guide to Ssh (secure Shell)This README provides an in-depth understanding of SSH (Secure Shell), its underlying principles, and practical applications. It covers generating and managing SSH keys, connecting to servers…8 min read
- 20Logical Volume Management (lvm) GuideLogical Volume Management (LVM) provides a flexible way to manage disk space. It allows you to create virtual partitions that can be easily resized, even across multiple physical drives.3 min read
- 21C Build Process & Libraries GuideThis guide explains the basic steps to convert source code from a .c file into an executable program, as well as how to create and use Static and Shared Libraries.7 min read
- 22Archiving and Compression in LinuxIn Linux, compression is conceptually similar to creating a .zip file in Windows. However, Linux separates the ideas of archiving and compression, giving you more flexibility.4 min read
- 23Linux Package Managers: a Detailed GuideIn the Linux ecosystem, software management is distinct from the manual "download installer and run" method often seen in other operating systems. Linux uses Package Managers, which are centralized…8 min read
- 25Mqtt Server Setup (pc as Server)First, update your package lists, install Mosquitto broker and clients, enable, and start the service.1 min read
- 28Difference Between apt and apt-getThe commands apt and apt-get are both package management tools used in Debian-based systems such as Ubuntu. While they serve similar purposes, there are important differences in functionality,…2 min read
- 29Difference Between apt Upgrade and apt Full-upgradeIn Debian-based systems (Ubuntu, Debian, Kali, Mint), package upgrades are handled using the apt command. Two common commands are:2 min read
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