https://preview.vvivid.dev/tags/systems-programming/Recent content in Systems-Programming on Ou David | Systems EngineerHugo -- gohugo.ioen-usMon, 15 Jun 2026 13:31:48 +0700https://preview.vvivid.dev/posts/process_api_behind_every_shell_command/Mon, 15 Jun 2026 13:31:48 +0700https://preview.vvivid.dev/posts/process_api_behind_every_shell_command/<p>I&rsquo;ve been reading <a href="https://pages.cs.wisc.edu/~remzi/OSTEP/">Operating Systems: Three Easy Pieces</a>, and today I went through chapter 05, the interlude on the Process API. It is a short chapter, but it clarified something important about how processes actually work.</p> <p>If you want to see the same idea in practical Go code, I put a small runnable example in the public case-study repo: <a href="https://gitlab.vvivid.dev/showcase/go-lang-case-study/-/tree/main/go/process-api-shell">go/process-api-shell</a>. It uses Go&rsquo;s standard <code>os/exec</code> package to run commands, redirect output, build a simple pipeline, and wait for the processes to finish.</p>