package session import ( "io/ioutil" "os" "time" ) func Clean(tmpdir string) error { files, err := ioutil.ReadDir(tmpdir) if err != nil { return err } now := time.Now() exp := 7 * 24 * time.Hour for _, file := range files { if len(file.Name()) == 40 { if diff := now.Sub(file.ModTime()); diff > exp { err = os.Remove(tmpdir + string(os.PathSeparator) + file.Name()) if err != nil { return err } } } } return nil }