base64decoder.go

package main

import (
	b64 "encoding/base64"
	"fmt"
	"io/ioutil"
	"os"
)

func main() {

	dat, err := ioutil.ReadFile("base64.input")
	if err != nil {
		fmt.Print("\nE-01:", err)
		os.Exit(1)
	}
	sDec, _ := b64.StdEncoding.DecodeString(string(dat))
	//fmt.Print(string(sDec))

	f, err := os.Create("base64.output")
	if err != nil {
		fmt.Print("\nE-02:", err)
		os.Exit(1)
	}

	defer f.Close()

	f.Write(sDec)
	f.Sync()

}