Guides and tutorials for Linux system administration
The most comprehensive free IT cheat sheet library on the web: 121 professional PDF guides across 4 skill levels — 41 quick references, 40 beginner guides, 20 intermediate guides, and 20 advanced guides. Covering 40+ technologies from Linux to Kubernetes....
Download 21 free, professionally designed IT cheat sheets covering Linux, Docker, Kubernetes, Git, Python, AWS, Terraform, and more. Print-ready PDF quick reference guides for system administrators, DevOps engineers, and IT professionals....
The Linux ecosystem is undergoing a seismic shift. From kernel modules to system daemons, Rust is rapidly replacing C++ as the language of choice for system programming. Here is what every Linux professional needs to know in 2026....
We're thrilled to announce that Dargslan has officially reached 150 published eBooks — a major milestone in our mission to build the most comprehensive IT & programming eBook library. Here's a look at how we got here and what's coming next....
Learn the 7 essential Linux server monitoring tools that every system administrator needs to master. From htop to Prometheus, this guide covers real-time performance tracking, log analysis, and proactive alerting strategies....
A comprehensive guide to Linux backup strategies and disaster recovery planning. Learn rsync, Borg, LVM snapshots, automated backup scripts, and the 3-2-1 backup rule with practical implementation examples....
The definitive guide to passing the Red Hat Certified System Administrator (RHCSA) EX200 exam in 2026. Covers every exam objective in detail: essential system administration, user management, storage with LVM and Stratis, networking, firewalld, SELinux, containers with Podman, shell scripting, boot troubleshooting, and time management strategies for the performance-based exam....
Everything you need to know about becoming a SOC Analyst in 2026. Covers daily responsibilities, essential tools (SIEM, EDR, SOAR), required skills, certification roadmap (CompTIA Security+, CySA+, GCIA), salary data across EU and US, career progression from Tier 1 to SOC Manager, and how to get your first cybersecurity job....
The definitive guide to Ubuntu 24.04 LTS (Noble Numbat) server administration. Covers installation, initial hardening, AppArmor, UFW firewall, Nginx, PHP, databases, Docker, Snap packages, automatic updates, performance tuning, and everything you need to run Ubuntu in production....