#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>

int main(int argc, char *argv[]) {
	int f1 = open(argv[1], O_RDONLY);
	if (f1 == -1) return 1;
	int f2 = open(argv[2], O_CREAT | O_WRONLY | O_TRUNC, 0755);
	if (f2 == -1) return 2;

	char buf;
	while(read(f1, &buf, 1)) {
		write(f2, &buf, 1);
	}

	close(f1);
	close(f2);
}