file_read.go

func main() {
	file, err := os.Open("./proverbs.txt")
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	defer file.Close()

	p := make([]byte, 4)
	for {
		n, err := file.Read(p)
		if err == io.EOF {
			break
		}
		fmt.Print(string(p[:n]))
	}
}