Tutorials

Set, list, persist, and remove Linux environment variables without breaking your shell or deployments. Highlights printenv, env, export, .bashrc, /etc/environment, development use cases, and best practices.

Automate Linux tasks with crontab and avoid silent scheduling mistakes. Breaks down cron syntax, field values, special characters, common commands, real examples, logging, email handling, and environment variables.

Work confidently with ZIP files on Linux from the terminal. Covers installing unzip, extracting archives, choosing target folders, handling passwords, scripting extractions, comparing ZIP with tar/gzip, and checking…

Handle large-scale text changes on Linux without opening a text editor. Covers sed syntax, search-and-replace operations, regex patterns, line editing, batch file processing, log analysis, backreferences, and practical…

Self-hosting OpenClaw gives you control over your AI assistant, but that power comes with security responsibilities. This comprehensive guide walks you through the real risks—from prompt injection attacks…

OpenClaw isn’t just a cool open‑source AI toy. It’s a practical way to automate the parts of your business that quietly eat your time: email triage, meeting follow‑ups,…

Track down and fix Cloudflare Error 522 when your origin server stops responding. Covers the most common timeout causes, DNS and firewall checks, KeepAlive settings, server overload issues,…

Fix ERR_CONNECTION_RESET without guessing where the connection breaks. Looks at website checks, VPN and proxy issues, router restarts, browser cache, antivirus/firewall interference, DNS flushing, TCP/IP resets, and prevention…

Track down DNS problems fast by checking whether your domain’s A record points to the correct hosting IP address. Covers how to find your server IP, check A…

Get past the 502 Bad Gateway error by checking both quick browser fixes and deeper server-side causes. Looks at cache, DNS, CDN issues, server logs, WordPress plugins, PHP…

Fix the 405 Method Not Allowed error by finding where the wrong HTTP method gets blocked. Highlights URL checks, recent updates, plugins, server logs, Apache and NGINX rules,…

n8n queue mode transforms a single-instance workflow automation setup into a distributed system capable of handling hundreds of simultaneous executions. This guide walks through the complete configuration process…

Speed up WordPress by tuning the stack underneath it, not just adding plugins. Looks at KVM vs OpenVZ, Apache vs NGINX vs OpenLiteSpeed, LiteSpeed Cache, VPS setup, benchmarks,…

Learn to port forward your Minecraft server in 5 steps. Configure IP, firewall, and router settings to enable multiplayer gaming.

Learn how to automate WordPress with n8n workflows. This guide walks you through setting up API credentials, building automation workflows, and creating practical use cases like AI-generated blog…