September 28, 2012, 2:19 PM — Here's how you can enable advance file permission in Ubuntu Linux.
1. Open a terminal window.
2. Type in the following command, then hit Enter:
gsettings set org.gnome.nautilus.preferences show-advanced-permissions
3. Right click any file or folder.
4. Go to Properties then Permissions.
5. You'll see that advanced file permissions have been enabled.
For more, see the original article at the link below.
How to enable advance file permission in Ubuntu Linux | Fresh Tutorial