# Page Not Found

The URL `files/EzOggbNF3MUcSNyJeUL0` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [4.4 系统目录结构](https://book.bsdcn.org/di-4-zhang-freebsd-ji-chu/di-4.4-jie-xi-tong-mu-lu-jie-gou.md)
- [4.9 用户和基本账户管理](https://book.bsdcn.org/di-4-zhang-freebsd-ji-chu/di-4.9-jie-yong-hu-he-ji-ben-zhang-hu-guan-li.md)
- [5.1 FreeBSD 软件源](https://book.bsdcn.org/di-5-zhang-ruan-jian-guan-li-he-xi-tong-sheng-ji/di-5.1-jie-geng-huan-freebsd-ruan-jian-yuan.md)
- [microSD 卡参数简介](https://book.bsdcn.org/fu-lu-i-gong-ju-yu-zi-yuan/cun-chu-ka.md)
- [4.3 macOS 用户迁移指南](https://book.bsdcn.org/di-4-zhang-freebsd-ji-chu/di-4.3-jie-macos-yong-hu-qian-yi-zhi-nan.md)

## How to find the correct page

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### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://book.bsdcn.org/di-4-zhang-freebsd-ji-chu/di-4.4-jie-xi-tong-mu-lu-jie-gou.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://book.bsdcn.org/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://book.bsdcn.org/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/di-4-zhang-freebsd-ji-chu/di-4.4-jie-xi-tong-mu-lu-jie-gou.md`).

You may also use `Accept: text/markdown` header for content negotiation.