Linux Manual
12 structured modules to master Linux server administration.
8.1 Nginx & TLS 1.3 High-Performance Setup
Nginx, Traefik, PostgreSQL, Redis, automated Let's Encrypt TLS, and performance tuning.
Security, Firewalls (nftables) & Logs7.1 High-Efficiency Firewalling with nftables
Next-gen packet filtering with nftables, SELinux/AppArmor, auditd event trails, and Fail2ban.
Processes, Systemd & Automation5.1 Hardened Systemd Service Units
POSIX signals, cgroups v2, custom Systemd units, timers, and cron jobs.
Linux Fundamentals1.1 Introduction to the Linux Ecosystem
Kernel architecture, filesystem hierarchy (FHS), shell, and essential documentation.
Linux Fundamentals1.2 Kernel Architecture & Syscalls
Kernel architecture, filesystem hierarchy (FHS), shell, and essential documentation.
Linux Fundamentals1.3 Terminal Mastery & Pipes
Kernel architecture, filesystem hierarchy (FHS), shell, and essential documentation.
Users, Permissions & ACLs2.1 User and Group Management
DAC model, special bits (SUID, SGID, Sticky Bit), sudoers, and POSIX access control lists.
Package Management & Compilation3.1 Package Managers in Debian & RHEL
APT, DNF/RPM, custom repositories, GPG verification, and building software from source.
Storage, LVM & Filesystems4.1 LVM: Dynamic Logical Volumes
GPT partitioning, Logical Volume Manager (LVM), ext4, XFS, Btrfs, and ZFS filesystems.
Networking, DNS & Remote SSH Access6.1 OpenSSH Server Hardening
TCP/IP stack, iproute2, DNS resolution, TLS certificates, and hardened SSH configurations.
Automation with Bash & Ansible9.1 Infrastructure as Code with Ansible
Idempotent Ansible playbooks, dynamic inventories, secret handling with Ansible Vault.
Virtualization with KVM, LXC & Docker10.1 Unprivileged LXC Containers in Proxmox
Proxmox VE, unprivileged isolated LXC containers, Docker Compose, and overlay networking.
Monitoring with Prometheus & Grafana11.1 System Metrics with Node Exporter
Node Exporter, time-series metrics collection, Grafana dashboards, and incident alerting.
Cloud Architectures & Hybrid Edge12.1 Cloudflare Pages Deployment with Mirror Domains
Cloudflare Pages & Workers, secure Cloudflared tunnels, S3 storage, and DevSecOps pipelines.