Git
Bulletproof SSH: Multi-Identity Git, Socket Persistence, and Zero-Trust Key Management
Most developers cargo-cult their SSH config from Stack Overflow. This is the setup I actually run: three GitHub identities on one machine, persistent control sockets, conditional git configs that auto-select the right key, and pinned known_hosts. No third-party tools.
Stop Committing PDFs: Use GitHub Releases as Your Library Backend
Every PDF committed to git history stays there forever, bloating clones even after deletion. Git LFS adds cost and friction. GitHub Release assets offer a better approach: free CDN-backed storage with on-demand downloads, lightweight repos, and built-in migration tools.
Mastering ZSH: Part 3 - Understanding Your Prompt: How Powerlevel10k Actually Works
Everyone uses Powerlevel10k, but do you understand how that fancy prompt actually works? Learn the ZSH primitives behind instant git status, command timing, and async rendering.