How Operating Systems Work
A twelve-part series on what Linux is actually doing when software runs.
Mechanics
Complete explanations of how things work — from first principles to full understanding.
Series
Articles
Why a Linux Binary Won't Run on Windows
A program compiled for Linux won't run on Windows, and a macOS binary won't run on Linux. The reason isn't the code — it's what the binary expects the operating system to do for it.
How Linux System Calls Work: The Kernel Crossing Explained
A program can't read a file, open a socket, or allocate memory without crossing into the kernel. Here's exactly how that crossing works — registers, privilege levels, and what strace shows you.