#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>

#define NUM_THREADS 4

int main(int argc, char **argv)
{
    int pid, ret, i;
    char cmd[1024];

    if (argc != 2) {
        fprintf(stderr, "Usage: %s [hostname]\n", argv[0]);
        exit(-1);
    }

    i = 0;
    do {
        pid = fork();
        i++;
    } while (pid && i < NUM_THREADS);

    if (pid) { /* Parent */
        for (i = 0; i < NUM_THREADS; i++)
            wait(&ret); /* Wait for the child to join */
    }
    else {
        snprintf(cmd, 1024, "ssh %s hostname", argv[1]);
        system(cmd);
    }

    return 0;
}