# Page Not Found

The URL `unix-tong-hen-zhe-shou-ce/di-yi-bu-fen-yong-hu-you-hao/huan-ying-xin-yong-hu-jiu-xiang-zhuang-man-liu-fa-zi-dan-deeluo-si-lun-pan-du` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [17.1 用户和基本账户管理](https://book.bsdcn.org/di-17-zhang-yong-hu-zhang-hu-yu-quan-xian/di-17.1-jie-yong-hu-he-ji-ben-zhang-hu-guan-li.md)
- [39.3 人工智能哲学原著选读](https://book.bsdcn.org/di-39-zhang-ren-gong-zhi-neng/di-39.3-jie-ren-gong-zhi-neng-zhe-xue-yuan-zhu-xuan-du.md)
- [15.1 本地化环境变量](https://book.bsdcn.org/di-15-zhang-ben-di-hua-yu-shu-ru-fa/di-15.1-jie-ben-di-hua-huan-jing-bian-liang.md)
- [19.4 通过 ZFS 启动环境实现多版本共存](https://book.bsdcn.org/di-19-zhang-freebsd-xi-tong-geng-xin/di-19.4-jie-tong-guo-zfs-qi-dong-huan-jing-shi-xian-duo-ban-ben-gong-cun.md)
- [38.7 科研和专业计算](https://book.bsdcn.org/di-38-zhang-you-xi-ke-xue-ji-suan-he-zhuan-ye-gong-ju/di-38.7-jie-ke-yan-he-zhuan-ye-ji-suan.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

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

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://book.bsdcn.org/di-17-zhang-yong-hu-zhang-hu-yu-quan-xian/di-17.1-jie-yong-hu-he-ji-ben-zhang-hu-guan-li.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

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-17-zhang-yong-hu-zhang-hu-yu-quan-xian/di-17.1-jie-yong-hu-he-ji-ben-zhang-hu-guan-li.md`).

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