Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

Git index.lock File Exists Even After Deleting: Fixes

Git index.lock File Exists Even After Deleting: Fixes

You delete the .git/index.lock file, but Git still says it exists. This can happen d...

Fix 'Permission Denied' in VS Code Terminal for Node.js

Fix 'Permission Denied' in VS Code Terminal for Node.js

You're working in VS Code, run npm install or node app.js, and get ...

Fix Windows 11 Update Stuck at 0% with Service Not Running

Fix Windows 11 Update Stuck at 0% with Service Not Running

You click Check for updates, see 0% for ages, and maybe an error like 'Windows Update service...

Fix Python Permission Denied When Installing Packages on Mac

Fix Python Permission Denied When Installing Packages on Mac

If you see a 'permission denied' error when running pip install somepackage ...

Fix Python Permission Denied When Running pip install -r requirements.txt

Fix Python Permission Denied When Running pip install -r requirements.txt

You run pip install -r requirements.txt and get a PermissionError or

How to Merge Two Git Repositories with Unrelated Histories

How to Merge Two Git Repositories with Unrelated Histories

You have two separate Git repositories that you now want to combine into one. Perhaps you acquire...