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

Docker Container Exits Immediately: Diagnosing Out of Memory

You start a Docker container and it exits within seconds. The logs show nothing obvious, or they ...

Fix Windows Update Error 0x80070005 by Taking Ownership

What Causes Error 0x80070005?

This error usually means Windows Update doesn't have pe...

Fix Nginx Configuration Test Failed on Ubuntu

When you run nginx -t on Ubuntu and get an error, Nginx won't reload or restart....

Git Detached HEAD vs Attached HEAD: What It Means and How to Fix

If you've seen the message "You are in 'detached HEAD' state" while using Git...

Fix git index.lock File Exists Error on Windows

If you see fatal: Unable to create 'index.lock': File exists. when running G...

Checklist for Pushing Large Files with Git

You've likely hit this: you try to push a commit, and Git rejects it because a file is too la...