I would like to create group for some user
After that I would like to add some user to group
sudo adduser username groupname
And set the permissions for each group. There will be three groups:
- Group administrators, with permission r,w,e
- Group of users, they could copy, insert new file, but no rewrite and delete
- Group of viewers, they could only read.
It will be for folder with subfolders. Could you help me with setting the permissions?