Writing to a file

As with reading files, Node provides a rich collection of tools for writing to files. We'll see how Node makes it as easy to target a file's contents byte-by-byte, as it is to pipe continuous streams of data into a single writable file.

Writing byte by byte

The fs.write method is the most low-level way Node offers for writing files. This method gives us precise control over where bytes will be written to in a file.

fs.write(fd, buffer, offset, length, position, callback)

To write the collection of bytes between positions 309 and 8,675 (length...