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

#define BUFFER_SIZE 4096

char buffer[BUFFER_SIZE];

int main (int argc,char** argv) {
	int len = 0;
	
	if (argc < 3) {
		printf("Must specify two files!\n");
		exit(0);
	}
	
	int file1 = open(argv[1],O_RDONLY,0);
	if (file1 < 0) {
		printf("Error opening file: %s\n",argv[1]);
		exit(0);
	}
	
	int file2 = open(argv[2],O_WRONLY | O_CREAT | O_TRUNC,0600);
	if (file2 < 0) {
		printf("Error opening file: %s\n",argv[2]);
		exit(0);
	}
	
	do {
		// TODO: check for errors!
		len = read (file1,buffer,BUFFER_SIZE);
		write(file2,buffer,len);
	}
	while (len > 0);
	
	// Intentionally ignoring errors...
	close(file1);
	close(file2);
}