package main

import (
	"fmt"
	"io"
	"os"
	"time"
)

/*
	@Ref: https://livebook.manning.com/book/go-in-practice/chapter-3/65
	`os.Stdin` and `os.Stdout` will be used as the system input and output. It's great.


*/

func main() {
	go echo(os.Stdin, os.Stdout)

	time.Sleep(30 * time.Second)

	fmt.Println("Time out.")
	os.Exit(0)
}

func echo(in io.Reader, out io.Writer) {
	io.Copy(out, in)
}