Episode Details

Ever wondered why a file written in one terminal tab is instantly visible in another, but an exported variable isn't? This episode traces the exact mechanics of Linux process creation — fork, exec, and copy-on-write — to explain why the filesystem is the universal shared medium between processes, while the environment is a one-time snapshot. Using a real Claude Code workflow as the entry point, we break down what's actually happening at the kernel level and why the design is both a feature and a security boundary.