package main import ( "fmt" "os" ) type logFile struct{ file *os.File } func (lf *logFile) Printf(format string, v ...interface{}) { fmt.Fprintf(lf.file, format, v...) } func (lf *logFile) Println(v ...interface{}) { fmt.Fprintln(lf.file, v...) } var mainLogFile *os.File func initLogFile() error { var err error mainLogFile, err = os.OpenFile(config.LogFilePath, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644) return err }