Miscellany

level2@student05:~$ cat -n level3.c |grep -C 10 s_err  1475  1476          case 'c':  1477          case 'n':  1478            count_lines = (c == 'n');  1479            if (*optarg == '+')  1480              from_start = true;  1481            else if (*optarg == '-')  1482              ++optarg;  1483  1484            {  1485              strtol_error s_err;  1486              strcpy(arg, optarg);  1487            }  1488            break;  1489  1490          case 'f':  1491          case LONG_FOLLOW_OPTION:  1492            forever = true;  1493            if (optarg == NULL)  1494              follow_mode = DEFAULT_FOLLOW_MODE;  1495            else--