public static void main(String[] args) {
		if (args.length == 0) {
			error("Not enough arguments: 0");
		}

		Set<String> commandList = new HashSet<>();
		commandList.add("shutdown");

		if (commandList.contains(args[0])) {
			if (send(args[0])) {
				System.out.println("SUCCESS!");
			} else {
				System.out.println("ERROR!");
			}
		} else {
			printHelp();
		}
	}