text: #include <stdio.h>
  #include <unistd.h>
  #include <sys/syscall.h>
  #include <fcntl.h>
  
  int main()
  {
  	int d;
  	d = open("foo.txt", O_RDWR | O_CREAT);
  	write(d, "Hello World!\n", 13);
  	close(d);
  	return 0;
  }
  