Arduino Reference - FileFlush

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SD : File class

## flush()

Ensures that any bytes written to the file are physically saved to the SD card. This is done automatically when the file is closed.

flush() inherits from the Stream utility class.

#### Syntax

file.flush()

#### Parameters

file: an instance of the File class (returned by SD.open())

#### Returns

none

#### See Also

- close()
- Stream.flush()

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