Command command = new Command(0, “chmod 777 /data/datan ls data/data”) {

        @Override
        public void commandCompleted(int id, int exitcode) {
            super.commandCompleted(id, exitcode);
            Log.e(TAG, "commandCompleted: Exit code: " + exitcode);
        }

        @Override
        public void commandOutput(int id, String line) {
            super.commandOutput(id, line);
            Log.e(TAG, "commandOutput: " + line);
        }

        @Override
        public void commandTerminated(int id, String reason) {
            Log.e(TAG, "commandTerminated: " + reason);
            super.commandTerminated(id, reason);
        }
    };

    try {
        RootTools.getShell(true).add(command);
    } catch (IOException e) {
        throw new RuntimeException(e);
    } catch (TimeoutException e) {
        throw new RuntimeException(e);
    } catch (RootDeniedException e) {
        throw new RuntimeException(e);
    }

Although there are more than two files in this path, data/data, only two files appear to me.