function writeBuffer(buffer) {
  var written = fs.writeSync(this.fd, buffer, 0, buffer.length, null);
  fs.fsyncSync(this.fd);
  return written;
}
function writeBuffer(buffer) {
  var written = fs.writeSync(this.fd, buffer, 0, buffer.length, null);
  fs.fsyncSync(this.fd);
  return written;
}
function writeBuffer ( buffer ) { var written = fs . writeSync ( this . fd , buffer , 0 , buffer . length , null ) ; fs . fsyncSync ( this . fd ) ; return written ; }
Write a buffer synchronously to the file and flush to disk.
Write a buffer synchronously to the file and flush to disk .