clite.commands.data = function() {
// insert commands below this line

clite.commands.load('help',function(args,env,io) {
	io.write('yeah, I should probably implement this');
	return 0;
});

clite.commands.load('ls',function(args,env,io) {
	var dirs = [];
	var long = false;
	function help() {
		io.write(`
Usage: ls [OPTION] [FILE]

Options:
-?	Print this help information
-l	Display data in long format
		`);
	}

	function writeNodeData(node) {
		if (long) {
			io.write(node.perms+'\t'+node.uid+'\t'+node.gid+'\t'+node.name);
		}else{
			io.write(node.name);
		}
	}

	for (var i=1; i<args.length; i++) {
		if (args[i][0] == '-') {
			for (var j=1; j<args[i].length; j++) {
				switch (args[i][j]) {
				case '?':
					help();
					return 0;
					break;
				case 'l':
					long = true;
					break;
				default:
					io.error('unknown argument: '+args[i]);
				}
			}
		}else if (args[i][0] == '/') {
			dirs.push(args[i]);
		}else{
			dirs.push(clite.lib.resolvePath(args[i],false));
		}
	}

	if (dirs.length < 1)
		dirs.push(env.PWD);

	dirs.forEach(function(dir,index) {
		if (dirs.length > 1)
			io.write(dir+':');
		var fd = clite.io.open(dir);
		if (!fd) {
			io.error('cannot open directory: '+dir);
			return;
		}
		if (!fd.node.data.isdir) {
			writeNodeData(fd.node);
			clite.io.close(fd);
			return;
		}
		var e;
		while ((e = clite.io.read(fd)) != null) {
			writeNodeData(e);
		}
		clite.io.close(fd);
	});

	return 0;
});

clite.commands.load('cat',function(args,env,io) {
	var files = [];
	var pending = 0;

	for (var i=1; i<args.length; i++) {
		if (args[i][0] == '-') {
			io.error('unknown argument: '+args[i]);
		}else if (args[i][0] == '/') {
			files.push(args[i]);
		}else{
			files.push(clite.lib.resolvePath(args[i],false));
		}
	}

	if (files.length < 1)
		return 1;
	pending = files.length;

	function fcb(fd) {
		if (fd.node.data.isdir || fd.node.data.islink || fd.node.data.isdev) {
			io.error('not a normal file: '+file);
		}else{
			var d = clite.io.readAll(fd);
			if (d != null) {
				io.write(d);
			}
		}
		pending--;
		clite.io.close(fd);
		if (pending <1)
			io.exit(0);
	}

	files.forEach(function(file,index) {
		var fd = clite.io.open(file,fcb);
		if (!fd) {
			io.error('cannot open file: '+file);
			pending--;
			return;
		}
		if (fd.node.data.isdir || fd.node.data.islink || fd.node.data.isdev) {
			io.error('not a normal file: '+file);
			pending--;
			return;
		}
	});

	if (pending <1)
		return 0;

	return null;
});

clite.commands.load('download',function(args,env,io) {
	return 0;
});

// insert commands above this line
}