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~32 Hours 16 Lessons100% Free

Linux & Ubuntu Systems Architecture & Shell Engineering

Master the Linux operating system, kernel mechanics, bash automation, networking, systemd, and server administration.

Comprehensive Linux & Ubuntu curriculum: kernel vs userspace architecture, File System Hierarchy Standard (FHS), permissions and access control, process lifecycle and signal handling, systemd unit management, bash shell scripting, networking, storage/LVM, log analysis, kernel sysctl tuning, and enterprise production server hardening.

What You Will Learn

  • Linux Kernel & Userspace Subsystem Architecture
  • File System Hierarchy (FHS) & Inode Mechanics
  • POSIX Permissions, SUID/SGID, Sticky Bits & Access Control
  • Process Management, Signals, systemd Services & Timers
  • APT & DPKG Package Management on Ubuntu Server
  • Advanced Bash Scripting, Streams, Redirection & Automation
  • Linux Networking, SSH Key Hardening, IP Routing & UFW Firewalls
  • Storage Management, Ext4/XFS, Partitioning & LVM (Logical Volume Manager)
  • Kernel Performance Tuning with sysctl, cgroups & eBPF
  • Production Linux Server Security & CIS Benchmark Hardening

Prerequisites & Environment

  • Basic computer literacy and terminal familiarity.

Complete Course Curriculum (16 Modules)

16 In-Depth Lessons
Module 01

Module 1: Linux Kernel Architecture & Ubuntu Foundations

1 Lessons

Understand monolithic kernel design, system calls, rings of privilege, and the Ubuntu LTS release cycle.

1.1Linux Kernel Architecture & Ubuntu Foundations
18m →
Module 02

Module 2: File System Hierarchy (FHS) & Inode Mechanics

1 Lessons

Master /etc, /var, /proc, /sys, /dev, hard links, soft symlinks, and inode index structures.

2.1File System Hierarchy Standard (FHS) & Inodes
20m →
Module 03

Module 3: Permissions, Ownership & Access Control (POSIX & ACLs)

1 Lessons

Master chmod, chown, umask, numeric octal modes, SUID, SGID, and Sticky Bits.

3.1File Permissions, Ownership & Special Bits (SUID/SGID)
22m →
Module 04

Module 4: Process Lifecycle, Signals & systemd Services

1 Lessons

Master PID, PPID, SIGTERM/SIGKILL, top/htop, systemctl service creation, and journalctl.

4.1Process Lifecycle, POSIX Signals & systemd Services
24m →
Module 05

Module 5: Package Management with APT, DPKG & Snap on Ubuntu

1 Lessons

Manage repositories, PPA sources, package caching, security updates, and deb inspection.

5.1Ubuntu Package Management with APT & DPKG
18m →
Module 06

Module 6: Bash Scripting, Streams & Cron Job Automation

1 Lessons

Master variables, loops, conditionals, exit codes, stdin/stdout/stderr redirection, pipes, and cron schedules.

6.1Advanced Bash Scripting, Streams & Cron Automation
24m →
Module 07

Module 7: Linux Networking, SSH Hardening & UFW Firewalls

1 Lessons

Master ip/netstat/ss, DNS resolution, SSH key hardening, and UFW packet filtering.

7.1Linux Networking, SSH Key Hardening & UFW Firewall
24m →
Module 08

Module 8: Storage, Partitioning, LVM & Filesystems

1 Lessons

Manage block devices, fdisk/parted, Ext4/XFS filesystems, /etc/fstab mounts, and LVM volumes.

8.1Block Devices, Filesystems & Logical Volume Manager (LVM)
22m →
Module 09

Module 9: System Logging, journalctl & Log Rotation

1 Lessons

Master systemd-journald, rsyslog, /var/log analysis, logrotate policies, and security auditing.

9.1System Logging with journalctl & Logrotate
20m →
Module 10

Module 10: Performance Monitoring, Memory, CPU & sysctl Tuning

1 Lessons

Analyze system bottlenecks with vmstat, iostat, mpstat, and tune kernel parameters with /etc/sysctl.conf.

10.1Linux Performance Monitoring & Kernel sysctl Tuning
24m →
Module 11

Module 11: Production Server Hardening & Security Compliance

1 Lessons

Apply CIS benchmarks, disable unnecessary services, configure fail2ban, and audit security posture.

11.1Production Linux Server Hardening & Security Standards
26m →
Module 12

Module 12: Extended Berkeley Packet Filter (eBPF) & XDP

1 Lessons

Master Linux kernel programmability: eBPF bytecode, kprobes/uprobes, BPF maps, and eXpress Data Path (XDP) packet filtering.

12.1eBPF & XDP: Linux Kernel Programmability & Tracing
28m →
Module 13

Module 13: Container Internals: cgroups v2, Namespaces & Rootless

1 Lessons

Master Linux container primitives: Linux namespaces (PID, Mount, Net, User), cgroups v2 unified resource limits, and building containers from scratch.

13.1Linux Container Internals: cgroups v2 & Namespaces
28m →
Module 14

Module 14: High-Performance Async I/O: `io_uring` & Kernel Bypass

1 Lessons

Master modern Linux asynchronous I/O: `io_uring` ring buffers, zero-copy socket transfers, and Data Plane Development Kit (DPDK).

14.1High-Performance Linux I/O: io_uring & Kernel Bypass
28m →
Module 15

Module 15: Memory Subsystem: Page Tables, TLB, HugePages & OOM Killer

1 Lessons

Master the Linux memory management subsystem: 4-level/5-level page tables, TLB cache misses, Transparent HugePages (THP), and tuning the OOM Killer.

15.1Linux Virtual Memory: Page Tables, HugePages & OOM Tuning
28m →
Module 16

Module 16: Kernel Security: SELinux, Seccomp BPF & Capabilities

1 Lessons

Master Linux kernel security hardening: Linux Capabilities (`capsh`), Seccomp BPF system call filtering, and SELinux MAC policy enforcement.

16.1Kernel Security: SELinux, Seccomp BPF & Capabilities
28m →