yukkuri1.go

package main

import (
	"fmt"
	"io/ioutil"
	"net/http"
)

func main() {
	url := "http://yukkurisinai.net/gopher.png"
	resp, err := http.Get(url)
	if err != nil {
		fmt.Println(err)
		return
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		fmt.Println(err)
		return
	}

	ioutil.WriteFile("gopher.png", body, 0644)
}