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Operating System in 1,000 Lines – Intro
Hey there! In this book, we're going to build a small operating system from scratch, step by step. You might get intimidated when you hear OS or kernel development, the basic functions of an OS (especially the kernel) are surprisingly simple.
Today's Linux kernel is overwhelmingly large, but it started with a tiny codebase, just like your hobby project. We'll implement basic context switching, paging, user mode, a command-line shell, a disk device driver, and file read/write operations in C. Sounds like a lot, however, it's only 1,000 lines of code! Especially when starting "from scratch", you'll encounter challenging parts like boot process and paging.
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