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# FileAppend

Appends new contents to a file starting at the last character in the file

## Method Signature

```
FileAppend(file=[any], data=[any], charset=[string], addnewline=[boolean])
```

### Arguments

| Argument     | Type      | Required | Description                                               | Default |
| ------------ | --------- | -------- | --------------------------------------------------------- | ------- |
| `file`       | `any`     | `true`   | The file object or string file path                       |         |
| `data`       | `any`     | `true`   | The data to append                                        |         |
| `charset`    | `string`  | `false`  | \[utf-8] the default charset to open the file for writing | `utf-8` |
| `addnewline` | `boolean` | `false`  |                                                           | `false` |

## Examples

### Simple Example

Appends a mock entry to a file.

```java
// Create mock log entry
logEntry = dateTimeFormat( now(), "yyyy/mm/dd HH:nn" ) & " this is a mock log entry!";
// Append line to file
fileAppend( "/path/to/file.log", logEntry );

```

### Additional Examples

```java
fileAppend( "path/to/file", "new content to append" );

```

## Related

* [ContractPath](/boxlang-language/reference/built-in-functions/io/contractpath.md)
* [CreateTempDirectory](/boxlang-language/reference/built-in-functions/io/createtempdirectory.md)
* [CreateTempFile](/boxlang-language/reference/built-in-functions/io/createtempfile.md)
* [DirectoryCopy](/boxlang-language/reference/built-in-functions/io/directorycopy.md)
* [DirectoryCreate](/boxlang-language/reference/built-in-functions/io/directorycreate.md)
* [DirectoryDelete](/boxlang-language/reference/built-in-functions/io/directorydelete.md)
* [DirectoryExists](/boxlang-language/reference/built-in-functions/io/directoryexists.md)
* [DirectoryList](/boxlang-language/reference/built-in-functions/io/directorylist.md)
* [DirectoryMove](/boxlang-language/reference/built-in-functions/io/directorymove.md)
* [DirectoryRename](/boxlang-language/reference/built-in-functions/io/directoryrename.md)
* [ExpandPath](/boxlang-language/reference/built-in-functions/io/expandpath.md)
* [FileClose](/boxlang-language/reference/built-in-functions/io/fileclose.md)
* [FileCopy](/boxlang-language/reference/built-in-functions/io/filecopy.md)
* [FileDelete](/boxlang-language/reference/built-in-functions/io/filedelete.md)
* [FileExists](/boxlang-language/reference/built-in-functions/io/fileexists.md)
* [FileGetMimeType](/boxlang-language/reference/built-in-functions/io/filegetmimetype.md)
* [FileInfo](/boxlang-language/reference/built-in-functions/io/fileinfo.md)
* [FileIsEOF](/boxlang-language/reference/built-in-functions/io/fileiseof.md)
* [FileMove](/boxlang-language/reference/built-in-functions/io/filemove.md)
* [FileOpen](/boxlang-language/reference/built-in-functions/io/fileopen.md)
* [FileRead](/boxlang-language/reference/built-in-functions/io/fileread.md)
* [FileReadBinary](/boxlang-language/reference/built-in-functions/io/filereadbinary.md)
* [FileReadLine](/boxlang-language/reference/built-in-functions/io/filereadline.md)
* [FileSeek](/boxlang-language/reference/built-in-functions/io/fileseek.md)
* [FileSetAccessMode](/boxlang-language/reference/built-in-functions/io/filesetaccessmode.md)
* [FileSetAttribute](/boxlang-language/reference/built-in-functions/io/filesetattribute.md)
* [FileSetLastModified](/boxlang-language/reference/built-in-functions/io/filesetlastmodified.md)
* [FileSkipBytes](/boxlang-language/reference/built-in-functions/io/fileskipbytes.md)
* [FileWrite](/boxlang-language/reference/built-in-functions/io/filewrite.md)
* [FileWriteLine](/boxlang-language/reference/built-in-functions/io/filewriteline.md)
* [GetCanonicalPath](/boxlang-language/reference/built-in-functions/io/getcanonicalpath.md)
* [GetDirectoryFromPath](/boxlang-language/reference/built-in-functions/io/getdirectoryfrompath.md)
* [GetFileInfo](/boxlang-language/reference/built-in-functions/io/getfileinfo.md)
* [getTempFile](/boxlang-language/reference/built-in-functions/io/gettempfile.md)
* [PropertyFile](/boxlang-language/reference/built-in-functions/io/propertyfile.md)


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