Notes on technology, code & self-hosting
A comprehensive guide to Linux file permissions — what they are, how the rwx model works, how to read and change permissions with chmod, chown and umask, plus special permissions like setuid, setgid and sticky bits.
A comprehensive Nmap tutorial for Linux, covering installation, target specification, host discovery, port scanning techniques, service and OS detection, the Nmap Scripting Engine, timing and performance, output formats, and practical examples from the official reference guide.
This tutorial provides a step-by-step guide to securing your Apache2 web server against common vulnerabilities and attacks. Follow these best practice
This tutorial provides step-by-step guidance to harden your Nginx server against common vulnerabilities. Follow these best practices to secure your de
A comprehensive Linux cheat sheet for hackers and security professionals, covering essential commands for navigation, permissions, networking, reconnaissance, system monitoring, and hacking tools — with runnable examples.
Automate home notifications by building a Telegram bot that sends alerts from your smart home, scripts, or Python projects.
How to create a complete bootable backup of your Linux system using rsync - safer and more flexible than dd for running systems.
Complete Docker Compose reference guide covering services, volumes, networks, commands, and configurations. Everything you need for container orchestration.