Arduino - YunFileIOWrite

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Bridge : FileIO Class

## write()

#### Description

Write data to the file.

This communicates with the Linux distribution through Bridge. While functionally similar to the SD library, the underlying code and connections are different.

#### Syntax

- file.write(data)
- file.write(buf, len)

#### Parameters

- file: an instance of the File class (returned by FileIO.open())
- data: the byte, char, or string (char *) to write
- buf: an array of characters or bytes
- len: the number of elements in buf

#### Returns

byte : write() will return the number of bytes written, though reading that number is optional

#### See also

- print()?
- println()?
- read()

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The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.

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