A public record of what I've learned since starting on Linux in August 2026. Each note started as a real problem I had to solve.
🐧 Linux & systems
Dotfiles architecture
How the config system works, and why
coming soon
Tracked vs local shell config
Which PATH lines belong where, and why
coming soon
Windows 11 & NVMe (Intel VMD)
Why the installer can't see the SSD, and the fix
coming soon
🔐 Networking & security
SSH keys & GitHub
Generate keys, the ssh-agent, and troubleshooting
coming soon
SSH with two GitHub accounts
Separate keys, host aliases, the URL-rewrite gotcha
coming soon
How a VPN works
Tunnels, TCP vs UDP, open ports
coming soon
ufw firewall
Rules, the renumbering trap, verifying a port is closed
coming soon
📋 Cheatsheets
Git daily workflow
Pull, commit, push, and what to do when they fail
coming soon