zombie.c

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

int main(int argc, const char *argv[])
{
    int i;
    pid_t pid;
    if (argc != 2) {
        fprintf(stderr, "Usage: zombie num\n");
        exit(1);
    }   

    if ((pid = fork()) == 0) {
        for (i = 0; i < atoi(argv[1]); ++i) {
            if (fork() == 0) {
                exit(0);
            }
        }
        while(1);
    } else {
        printf("kill zombie by pid = %d XDDD\n", pid);
    }   
    return 0;
}