Checklists for software errors, setup, and tool workflows.

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Fix Git 'index.lock' File Exists Error on Linux

When working with Git on Linux, you might see an error like:

fatal: Unable to creat...

Fix Docker Overlay2 Disk Usage and No Space Left Errors
When Docker reports 'no space left on device' or you notice disk usage climbing in ...

Fix Externally Managed Error: Create Virtual Environment
If you're on a modern Linux distribution and try to install a Python package with pip, you ma...

Fix 'No Space Left on Device' with Docker Devicemapper
If you're running Docker with the devicemapper storage driver and see no s...

Fix 'Python' Command Not Found in Windows 10
When you type python in Command Prompt and see 'python' is not recogni...

Why VS Code Debugger Breakpoints Are Greyed Out and How to Fix
You set a breakpoint in VS Code, but it appears greyed out and the debugger skips it. This usuall...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Git 'index.lock' File Exists Error on Linux

Fix Docker Overlay2 Disk Usage and No Space Left Errors

Fix Externally Managed Error: Create Virtual Environment

Fix 'No Space Left on Device' with Docker Devicemapper

Fix 'Python' Command Not Found in Windows 10

Why VS Code Debugger Breakpoints Are Greyed Out and How to Fix

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