gistfile1.c

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

main() {
        char *lots_of_memory;
        int i;

        printf("Allocating...\n");
        lots_of_memory = malloc(2000000000);
        printf("Filling...\n");
        memset(lots_of_memory, 0, 2000000000);
        printf("Looping...\n");

        for (i = 0; i <= 30; i++) {
                sleep(1);
        }

        free(lots_of_memory);
}