I updated to ubuntu 14.04 recently. I was very disappointed when I came to know that the awesome "tree view" was not available in nautilus. I searched online to find if there was any way to get it back. Most suggested to switch to older version of nautilus, which is simply absurd. So I decided to figure out a way myself and I did.
To switch to tree view first install dconf-editor.
sudo apt-get install dconf-editor
Then open dconf-editor. Go to org -> gnome -> nautilus -> list-view and check use-tree-view.
Now your list view is tree view.
To switch to tree view first install dconf-editor.
sudo apt-get install dconf-editor
Then open dconf-editor. Go to org -> gnome -> nautilus -> list-view and check use-tree-view.
Now your list view is tree view.