andrei@cojan:~$ ls -la ~/field-notes/
Linux, hosting, networks, and whatever else I feel like writing about. Notes from working with real systems.
SSH keys are simple until you have enough of them. I built SSHSpan to manage, encrypt, organize and deploy them locally without another cloud account, subscription or piece of infrastructure to babysit.
Python, Go, and Ansible were supposed to replace shell scripts years ago. They didn't. Bash is still one of the most useful tools in server automation, and pretending otherwise is how people end up overengineering simple jobs.
A comprehensive analysis of how aluminum penetrates the brain, collapses clearance mechanisms, and drives neurodegenerative diseases like Alzheimer's. This substance is actually found in pediatric vaccines for newborns in Romania (and probably many other countries).
Yesterday's Cloudflare outage took down X, ChatGPT, and millions of sites. Here's what actually happened and why "the cloud" isn't as resilient as you thought.
Debian Stable is boring. That's exactly why it's perfect for production servers where downtime costs actual money.
Complete analysis based on comprehensive academic research of eliminating taxes on minimum wage in Romania - effects on employees, the economy, and the state budget