Posts

For years Green IT was a shared professional responsibility. Then generative AI arrived and the ecological discourse went quiet. But the numbers did not.

Deploy a self-hosted GitLab Runner for homelab CI/CD and use it to run Ansible playbooks safely on private LAN services.

A step-by-step migration from named volumes to bind mounts in Docker Compose, including backup, data copy, validation, and rollback.

A practical, low-friction dotfiles workflow with GNU Stow and Git that scales across machines.

Blockchain is a tamper-evident, append-only ledger secured by cryptographic hashes and distributed consensus. Build one in pure Python to understand how it works.

Essential Docker Swarm commands for cluster management, services, stacks, and secure deployments.

Essential vi commands for fast editing in terminal-only environments.

Essential Docker and Docker Compose commands for everyday container work.

Bitcoin combines cryptography, a peer-to-peer network, and proof-of-work to enable digital scarcity without a central authority.

Deploy Gluetun as a VPN gateway for qBittorrent with AirVPN or ProtonVPN to download your favorite Linux distributions securely and privately.

Deploy Traefik v3 with CrowdSec to add log-based detection, AppSec WAF enforcement, IP bans, security headers, and rate limiting to a homelab stack.

A practical DevOps walkthrough of each daemon.json key with hardening advice and validation commands.

A step-by-step guide to installing the WireGuard VPN module on your Synology NAS.

A comprehensive cheatsheet for uv, the blazing-fast Python package installer and resolver written in Rust.

Essential MongoDB Shell commands for database and collection management, CRUD operations, indexing, and aggregation.

Quick reference for essential Linux networking commands and troubleshooting techniques.

Enhance your commit messages with Gitmoji to improve clarity and intention.

A brief overview of watermarking in photography and its implications.

A brief overview of EXIF metadata in images and its implications.

How to free up ports 80 and 443 on a Synology NAS.

If you’re looking into running OpenVPN on your Synology NAS, you may have come across the following error: ERROR: Cannot open TUN/TAP dev /dev/net/tun: No such file or directory (errno=2). Let’s see how to fix it.

How to fix a corrupt zsh history file

Extract text from images using Python with OpenCV and Tesseract OCR.

Handy Python snippets for working with lists and dictionaries.

Master Python file and directory operations with practical examples and performance optimizations.

Common distance heuristics used in pathfinding algorithms on a 2D grid

Improve your Python code quality with linting and configuration tools.

Enhance your terminal experience with Zsh and Starship prompt.

Install Portainer as container

Step-by-step guide to install and configure Docker on your system.

Set up a local PyPi caching mirror with DevPi Server