String ReadCmd(int timeout)
{
	String r;
	int time = msecs();
	
	while(msecs(time) < timeout){
		int c = 0;
		int n = read(STDIN_FILENO, (char*) &c, 1);
		if(c == '\n')
			break;
		if(n > 0) {
			r.Cat(c);
			time = msecs();
		}
	}
	return r.GetCount() ? r : String::GetVoid();
}