Checklists for software errors, setup, and tool workflows.

Prevent Git Index Lock File Creation: Practical Fixes

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

Python Requests: Fixing Connection Timeout with Proxies

You're using the Python requests library with a proxy, and you're seeing a <...

Fix net::ERR_CERT_AUTHORITY_INVALID on Chrome in Linux Terminal

When you see net::ERR_CERT_AUTHORITY_INVALID in Chrome on Linux, it usually means th...

Git Clone Connection Timed Out: Troubleshooting Checklist

When you run git clone and get a connection timed out error, the cl...

How to Fix Git Merge Unrelated Histories Error

You run git pull or git merge and get:

fatal: refusing to...