{"one-file-system", 'x', POPT_ARG_NONE, 0, 'x', 0, 0 },
{"no-one-file-system",'x',POPT_ARG_VAL, &one_file_system, 0, 0, 0 },
{"no-x", 'x', POPT_ARG_VAL, &one_file_system, 0, 0, 0 },
{"one-file-system", 'x', POPT_ARG_NONE, 0, 'x', 0, 0 },
{"no-one-file-system",'x',POPT_ARG_VAL, &one_file_system, 0, 0, 0 },
{"no-x", 'x', POPT_ARG_VAL, &one_file_system, 0, 0, 0 },