> For the complete documentation index, see [llms.txt](https://documentation.astera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.astera.com/astera-data-stack-v6/functions/files/copyfile-string-sourcefilepath-string-destfilepath-boolean-overwrite.md).

# CopyFile (String sourceFilePath, String destFilePath, Boolean overWrite)

| **Name**    | ***CopyFile***                                                                                                                                                                                                                              |
| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Syntax      | CopyFile (String sourceFilePath, String destFilePath, Boolean overWrite)                                                                                                                                                                    |
| Purpose     | To copy a file to a specified destination file.                                                                                                                                                                                             |
| Description | Copies a file to the specified destination file.                                                                                                                                                                                            |
| Return Type | Void                                                                                                                                                                                                                                        |
| Parameters  | <p>sourceFilePath \[System.String] – Full path of the source file</p><p>destFilePath \[System.String] – Full path of the destination file</p><p>overwrite \[System.Boolean] – Indicates whether the existing file should be overwritten</p> |

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/0%20\(197\).png)

**Example**

In this example, we are passing the required parameters to the function transformation object using a *Variables* object. We will be copying a “Test.txt” source file to a different destination file folder.

Where,

*sourceFilePath* = *C:\Users\Kanwal.Azim\OneDrive - Astera Software\Desktop\Functions Documentation\Files\AppendTextToFile\Test.txt*

*destFilePath* = C:\Users\Kanwal.Azim\OneDrive - Astera Software\Desktop\Functions Documentation\Files\CopyFile\Test3.txt

*overWrite* = False

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/1%20\(197\).png)

Right-click on the function transformation object and select *Preview Output.* While the *Data Preview* will not generate an output. Upon opening destination file location, you can see that Astera Data Stack has copied the Test.txt file, with the specified name, Test3.txt.

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/2%20\(196\).png)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://documentation.astera.com/astera-data-stack-v6/functions/files/copyfile-string-sourcefilepath-string-destfilepath-boolean-overwrite.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.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.