Workflow manuals for setup steps, repeatable tasks, and software operations.

How to Check Docker Disk Space Usage

If you run Docker for a while, you may notice your disk space shrinking. Images, containers, volu...

Fix Nginx 'Permission Denied' Upstream Errors

When Nginx logs permission denied while connecting to an upstream (e.g., a Unix sock...

How to Fix Git 'index.lock' File Exists Error

When you see fatal: Unable to create 'path/.git/index.lock': File exists., G...

Fix Windows Update Error 0x80070002 by Resetting SoftwareDistribution Folder

Windows Update error 0x80070002 often appears when the system cannot find or access the update fi...

How to Fix Firefox Secure Connection Failed Malware Warnings

If you see a "Secure Connection Failed" error in Firefox and suspect malware, it's of...

Git Fatal: Refusing to Merge Unrelated Histories – Workaround

You try to merge two Git branches and get this error:

fatal: refusing to merge unre...