1package main
 2
 3import (
 4	"io"
 5	"log"
 6	"os"
 7	"time"
 8)
 9
10func savelog() {
11	timeS := time.Now().String()
12	logFile, err := os.OpenFile("log-"+timeS+".log", os.O_CREATE|os.O_APPEND|os.O_RDWR, 0666)
13	if err != nil {
14		panic(err)
15	}
16	mw := io.MultiWriter(os.Stdout, logFile)
17	log.SetOutput(mw)
18}