int tail(string file) {
	string str;
	int diff;

	diff = file_size(file);
	if (diff < 0) return 0;

	diff -= 1024;
	if (diff < 0) diff = 0;
	str = read_bytes(file, diff, 1024);
	if (!str) return 0;
	if (diff) str = str[strsrch(str, "\n")+1..];

	write(str);

	return 1;
}