gistfile1.txt

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

void on_exit_1()
{
  puts("Exit 1!");
  fork();
  puts("Exit 2!");
  execvp("bash", NULL);
}

int main()
{
  int i;
  atexit(on_exit_1);
  fork();
  printf("FOO");
  exit(0);
}