def __init__(self):
            self.list = []
            self.files = [
                pathlib.Path(os.sep, "etc", "apt", "sources.list"),
                pathlib.Path(os.sep, "etc", "apt", "sources.list.d"),
            ]
            for file in self.files:
                if file.is_dir():
                    for fp in file.glob("**/*.list"):
                        self.add_file(file=fp)
                else:
                    self.add_file(file)