Do it again.

retry.c

int main(int argc, char *argv[]) {
    int count = 10, silent = 0;
    char * command = 0;

    char letter;
    while ((letter = getopt_long(argc, argv, "n:c:s")) != -1) {
        switch (letter) {
        case 'n':
            count = atoi(optarg);
            break;

        case 'c':
            command = optarg;
            break;

        case 's':
            silent = 1;
        }
    }

    if (!command) {
        printf("USAGE: retry [-n <number>] -c <command> [-s]\n");
    }

    int result = -1;
    while (count--) {
        result = system(command);

        if (!result) break;

        if (!silent) {
            printf("\nexecution result was %d\n%d more times...\n\n", result, count);
        }
    }
}