THE UNKNOWN
Essays, notes, and practical guides for making sense of the world.
Five Quiet Minutes After the Lights Went Out
A brief neighborhood blackout turns five ordinary minutes into an unexpectedly social evening.
Docker Bind Mounts or Volumes? A Practical Choice
Choose between Docker bind mounts and named volumes by ownership, portability, backup needs, and failure modes.
The Plant I Was Asked Not to Name
An unnamed office plant, a handwritten warning, and the surprisingly serious politics of keeping one leaf alive.
When Cron Does Not Share Your Shell
Why a command can succeed interactively but fail under cron, with a small wrapper pattern that makes paths and output explicit.
The Elevator That Skipped My Floor
An apartment story about an elevator with selective hearing and a surprisingly organized complaints process.
Reading a Failed systemd Service Without Scrolling Forever
A compact sequence for checking a failed systemd unit, its recent logs, and the exact configuration systemd loaded.
The Coffee Machine's Final Warning
An office story about a coffee machine that communicates exclusively through increasingly personal error messages.
SSH Config Aliases for a Small Fleet
Replace long SSH commands with readable host aliases while keeping usernames, ports, keys, and jump hosts explicit.
The Convenience Store Knew My Schedule
A late-night story about a convenience store clerk, a predictable snack order, and the danger of becoming a regular.
GitHub Actions CI/CD: A Practical Guide
Learn how to build production-ready CI/CD pipelines with GitHub Actions through real-world examples, covering frontend/backend workflows, Docker builds, multi-platform releases, and automated issue management.
Troubleshooting Google Public CA and acme.sh
A focused troubleshooting companion for Google Public CA EAB registration, DNS-01 validation, installation, and renewal with acme.sh.
Docker Multi-Stage Builds: Optimizing Image Size
When building Docker images, one of the most common challenges developers face is keeping image sizes manageable. Large images lead to slower deployments,...