Linux Course

Lesson 1 • Linux Architecture and Core Components

Explains kernel space, user space, system calls, and init systems. Provides the conceptual foundation for understanding how all Linux processes operate.

Lesson 2 • Virtualization and Lab Environments

Covers hypervisors, virtual machines (VMs), and containers for safe practice. Enables students to build isolated labs without risking production systems.

Lesson 3 • History and Linux Distributions

Traces Linux origins from Unix through the kernel and major distro families. Establishes context for choosing the right distribution for professional tasks.

Lesson 1 • Getting Help and Documentation

Covers man pages, info pages, --help flags, and online resources. Builds self-sufficiency so students can resolve issues without external assistance.

Lesson 2 • Shell Basics and Terminal Navigation

Introduces the shell prompt, command syntax, and filesystem navigation commands. Forms the entry point for all subsequent CLI-based work in the course.

Lesson 3 • File and Directory Operations

Covers creating, copying, moving, and deleting files and directories safely. Directly supports file management tasks required in every Linux role.

Lesson 4 • Redirection, Pipes, and Command Chaining

Explains stdin, stdout, stderr, pipes, and command substitution. Unlocks the ability to build powerful one-liners and processing pipelines.

Lesson 1 • File Types and Metadata

Distinguishes regular files, directories, symlinks, devices, and sockets. Enables correct interpretation of ls output and file-type-specific operations.

Lesson 2 • Special Permissions and Access Control Lists

Covers setuid, setgid, sticky bit, and POSIX ACLs for fine-grained control. Extends the basic permission model to handle complex multi-user scenarios.

Lesson 3 • Filesystem Hierarchy Standard (FHS)

Maps the purpose of each top-level directory in the Linux filesystem tree. Prevents misplaced files and supports correct system administration practices.

Lesson 1 • Group Management and Membership

Explains groupadd, groupmod, groupdel, and managing group memberships. Supports role-based access control through proper group assignment.

Lesson 2 • User Account Management

Covers useradd, usermod, userdel, and the /etc/passwd and /etc/shadow files. Enables full lifecycle management of local user accounts.

Lesson 3 • Password Policies and Authentication

Covers passwd, chage, and PAM-based password policy enforcement. Ensures accounts meet organisational security requirements for authentication.

Lesson 1 • Job Scheduling with cron and systemd

Covers crontab syntax, at command, and systemd timer units for scheduling. Automates maintenance, backups, and reporting tasks reliably.

Lesson 2 • Signals and Process Control

Teaches kill, killall, pkill, and signal types for process management. Enables controlled termination and communication with running processes.

Lesson 3 • Monitoring System Activity

Covers ps, top, htop, vmstat, iostat, and free for real-time monitoring. Enables identification of resource bottlenecks and misbehaving processes.

Lesson 1 • Package Management Concepts

Explains packages, repositories, metadata, and dependency resolution. Establishes the conceptual framework shared across all package management tools.

Lesson 2 • Debian-Based Package Management

Covers apt, apt-get, dpkg, and sources.list configuration for Debian systems. Enables full software lifecycle management on Ubuntu and Debian distributions.

Lesson 3 • Compiling Software from Source

Walks through downloading, configuring, compiling, and installing source code. Handles software unavailable in official repositories.

Lesson 4 • Snap, Flatpak, and Universal Packages

Introduces containerised package formats that work across distributions. Expands software availability beyond traditional distro repositories.

Lesson 1 • Firewall Management with firewalld and iptables

Teaches zone-based firewalld rules and foundational iptables chains. Enables traffic filtering and port access control on Linux servers.

Lesson 2 • Network Fundamentals for Linux Admins

Reviews IP addressing, subnetting, TCP/UDP, and the OSI model in Linux context. Provides the theoretical base for all practical networking tasks.

Lesson 3 • Network Diagnostics and Troubleshooting

Covers ping, traceroute, ss, netstat, tcpdump, and curl for diagnostics. Builds a systematic approach to isolating and resolving network faults.

Lesson 4 • Configuring Network Interfaces

Covers ip, nmcli, and static vs. DHCP configuration methods. Enables persistent and temporary network interface setup on modern Linux systems.

Lesson 1 • Backup, Recovery, and System Snapshots

Covers rsync, tar, dd, and snapshot strategies for data protection. Ensures students can recover systems and data after failures or misconfigurations.

Lesson 2 • Security Hardening Fundamentals

Applies SSH hardening, SELinux/AppArmor basics, and system audit tools. Reduces attack surface and enforces mandatory access control on Linux servers.

Lesson 3 • Storage and Filesystem Management

Covers fdisk, parted, mkfs, mount, and LVM for storage administration. Enables provisioning and managing disk resources on physical and virtual systems.

Lesson 4 • systemd Service Management

Teaches systemctl, unit files, targets, and service dependency management. Enables reliable control of all system services and boot-time behaviour.