package main import ( "./utils" "flag" "time" ) var ( logpath = flag.String("logpath", "/tmp/weather.log", "Log Path") ) func main() { flag.Parse() utils.NewLog(*logpath) utils.Log.Println("hello") for i := 0; i < 10; i++ { utils.Log.Println(i) } time.Sleep(3 * time.Second) }