我有一个文件夹，my-folder. 从它的父目录，我首先做：
sudo chown -cR matthewslouismarie: my-folder
如果我这样做：chmod -cR 600 my-folder，我得到：
chmod: cannot access 'my-folder/build.sh': Permission denied
chmod: cannot access 'my-folder/vmdk': Permission denied
chmod: cannot access 'my-folder/.git': Permission denied
chmod: cannot access 'my-folder/run.sh': Permission denied
chmod: cannot access 'my-folder/docker': Permission denied
chmod: cannot access 'my-folder/.gitignore': Permission denied
我不应该完全拥有这个文件夹及其内容吗？
笔记：
运行sudo chmod -cR 600 my-folder不会打印任何内容。matthewslouismarie是我输入时得到的whoami。