Golang log to file

main.go

package main

import (
  "os"
  "time"
)

func main() {
  
	logFileName := fmt.Sprintf("logs_%v.log", time.Now().String())
	logFilePath := "./" + logFileName
	f, err := os.OpenFile(logFilePath, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
	if err != nil {
		log.Fatalf("error opening file: %v", err)
	}
	defer f.Close()
	wrt := io.MultiWriter(os.Stdout, f)
	log.SetOutput(wrt) 
  
  log.Println("this goes to the conosle, and to the file.")
}