> For the complete documentation index, see [llms.txt](https://cccs.viyi.cc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cccs.viyi.cc/3-cao-zuo-xi-tong.md).

# 3 操作系统

对应视频分 P 为 p18\~27。