Knowledge base for software setup, errors, and daily tool work.

Docker Compose .env File Setup: A Practical Guide

If you've been using Docker Compose without a .env file, you're probably hard-coding...

Stop systemd Service from Restarting in a Loop

If you have a systemd service that keeps restarting repeatedly — sometimes every few seconds — it...

How to Fix Windows Security Error 0x80073b01

You may see error 0x80073b01 when opening Windows Security or trying to use its features. It usua...

Fix WSL Ubuntu Cannot Ping External Network

You run ping google.com from your WSL Ubuntu terminal and get no response, or an err...

npm Command Not Found: Troubleshooting Checklist

You type npm install and get npm: command not found. This typically mea...

Fix 'ffmpeg command not found' in PHP exec()