Code

The AI bluff is a real failure mode: code or explanations that look authoritative and are subtly wrong. Here's how to smell it before you ship it.

I wrote FlowPro in 1997 as a Visual Basic port of a Fortran open-channel-flow program. This week I asked Claude to convert it into a web app.

Ten real security findings from an AI-run audit of my own apps — high, medium, and low severity, and how each one got fixed.

Linux and Unix-based systems have a built-in scheduling service called cron, that runs in the background and executes commands defined as…

Centos comes with a powerful firewall called iptables, that gives you very granular control over access to your server. Iptables is…