Linux Fundamentals

Linux Fundamentals Series

10 chapters covering everything from kernel architecture to shell scripting. Read in order or jump to the chapter you need.

Series HomeInteractive reader with sidebar nav Start Chapter 1Kernel, shell, distributions and enterprise concepts Chapter 1 QuizChapter Completion Certificate at 70%+ Quiz CenterAll Linux quizzes, Daily Quiz, mock exams

The Linux Fundamentals series is a ten-chapter path for administrators moving into Linux administration or refreshing core skills before working on IBM Power workloads.

Chapters progress from kernel and filesystem basics through permissions, services, storage, networking and shell scripting. Use the interactive series reader for sidebar navigation, or open individual chapters directly when you need a targeted revision topic.

Looking for a practical desktop tuning guide? Read Optimize Rocky/RHEL Linux 9.x with Xfce for Laptops.

1

Introduction to Linux

Kernel, shell, distributions and enterprise concepts.

→ 2

Filesystem & Essential Commands

Hierarchy, navigation, file operations and redirection.

→ 3

Permissions & Ownership

chmod, chown, umask, ACLs, SUID and SGID.

→ 4

Users & Groups Administration

useradd, groupmod, sudo and account lifecycle.

→ 5

Package Management & Text Processing

dnf/apt/rpm packages plus grep, sed, awk and pipelines.

→ 6

Processes, Signals & systemd

ps, kill, job control, systemctl and journalctl.

→ 7

Disks, Partitions & LVM

Device naming, partitioning, filesystems and LVM volume management.

→ 8

Networking Fundamentals

Interfaces, routing, DNS and firewall basics.

→ 9

Persistent Mounts & Storage Ops

fstab by UUID, swap, NFS, automount and production troubleshooting.

→ 10

Shell Scripting

Variables, loops, functions and automation patterns.

→