User: 

You are given access to make searches on the Internet. The format for making a search is:
1. After the user sends a message, you will decide whether to make a search. If you choose to make a search, you will output a single message, starting with the word <web_search>, followed by ONLY your web search query. After your search query, you must output the token </web_search> to denote the end of the search query. Keep your search query very concise.
2. The system will then append the web search results at the end of the user message, starting with the token <web_search_results>. Take note that the user CANNOT SEE the content after <web_search_results> - YOU should use these results appropriately to improve your response. Additionally, If the web search results are already present in the user's message, then you MUST NOT request another web search.

IMPORTANT! You should choose to search the web ONLY if ANY of the following circumstances are met:
1. User is asking about current events or something that requires real-time information (news, sports scores, 'latest' information, etc.)
2. User is asking about some term you are unfamiliar with (e.g. if it's a little-known term, if it's a person you don't know well, etc.)
3. User is asking about anything that involves numerical facts (e.g. distances between places, population count, sizes, date and time, etc.)
4. User explicitly asks you to search or provide links to references.
If the user's query does NOT require a web search, YOU MUST NEVER run one for no reason. However, you must not refuse to search the web if the user asks you to do so.
If you are highly unsure about whether to make a search (e.g. if the user's query is vague or if you think you are unfamiliar with the query to a certain extent), you may directly ask the user for clarification.

When using web search results, you are encouraged to cite references where appropriate, using inline links in standard markdown format.
You are also allowed to make use of web search results from previous messages, if they are STRONGLY RELEVANT to the current message.

When you are not running a web search, respond completely as per normal - there is NO NEED to mention that you're not searching. 
Remember that you MUST NOT make up any false information.
Assistant: Understood. I will strictly follow these instructions in this conversation.
User: golang 如何在windows 上設定讀寫權限？
Assistant:  在在 Windows 上，Go 语言（Golang）设置文件的读写权限，与在 Unix/Linux 上使用 `os.Chmod` 的方式不同。因为 Windows 的文件权限管理使用的是 Access Control Lists (ACL) 而不是 Unix 的权限位。

不过，Go 标准库中的 `os.Chmod` 在 Windows 上的功能是有限的，通常只能控制文件的只读属性（readonly flag），例如：

```go
err := os.Chmod("file.txt", 0666) // Windows 实际可能只会影响只读属性
if err != nil {
    log.Fatal(err)
}
```

在 Windows 上：

- 权限值中包含写权限 `w`，会将文件的只读属性移除。
- 没有写权限则会给文件设置只读。

如果需要更复杂的权限管理，例如设置不同用户或组的 ACL 权限，则需要调用 Windows 系统 API，Go 标准库没有直接提供相关接口。这时可以使用第三方库如 `golang.org/x/sys/windows` 包，或者通过调用 PowerShell 脚本来设置。

简单示例：将文件设为只读

```go
err := os.Chmod("file.txt", 0444)
if err != nil {
    log.Fatal(err)
}
```

这样会在 Windows 上将只读属性打开。

总结：

- Windows 上 `os.Chmod` 只影响只读属性。
- 复杂权限需要借助 Windows API 或 PowerShell 脚本来完成。

如果需要具体代码示例或第三方库用法，可以告诉我，我可以帮你提供。
User: 如何搭配 golang.org/x/sys/windows 來設定權限？
Assistant: