#include<fcntl.h>
#include<unistd.h>

int main(){
	int fd = open("holefile", O_WRONLY | O_CREAT, 0644);
	write(fd, "begin", 5);
	lseek(fd, SEEK_SET, 1024*1024*1024);
	write(fd, "end", 3);
	close(fd);
	return 0;

}