code: func GetWinsize(fd uintptr) (*Winsize, error) {
  	uws, err := unix.IoctlGetWinsize(int(fd), unix.TIOCGWINSZ)
  	ws := &Winsize{Height: uws.Row, Width: uws.Col, x: uws.Xpixel, y: uws.Ypixel}
  	return ws, err
  }
docs: // GetWinsize returns the window size based on the specified file descriptor.