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I just switched to Fedora 27 and was wondering if what I want is possible.

I want a certain user to inherit all permissions from another user (Meaning: Being able to access files as if I were the owner)

I'd like a structure as follows:

root
├── desktop_user
│   ├── firefox
│   ├── chrome
│   └── games
│       ├── game_1
│       └── game_2
└── All other applications

Where I want the desktop_user to be able to access files from all sub-users in the tree. but firefox and chrome would not be able to act as desktop_user.

The same goes for desktop_user and root. I do not want to have access to root unless I enter a password. I am looking for a clean way to do this, preferably.

  • but firefox and chrome would not be able to act as desktop_user please explain what act like means here! – George Udosen Dec 19 '17 at 15:15
  • I do not want firefox and chrome to gain the same level of permission as the desktop user Meaning: su desktop_user should fail for firefox and chrome – Terminator_NL Dec 19 '17 at 15:20
  • What is a sub-user? – Mark Plotnick Dec 19 '17 at 15:28
  • I could not think of a better term for it, but it's an user which belongs to another user, see the tree above. I want the users in the list to be able to have full control over all their children shown in the tree. So in this case: game_1 is a sub-user of games and games is a sub-user of desktop_user – Terminator_NL Dec 19 '17 at 15:37
  • Create a group for the others and add desktop_user to it so it can act like firefox & co, then add user desktop_user to the /etc/sudoers using visudo command! – George Udosen Dec 19 '17 at 15:45
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Allright, I think I have it figured out with the help of George Udosen.

I edited the sudoers rules using: visudo -f /etc/sudoers.d/overrides

desktop_user ALL=(%desktop_child) NOPASSWD: ALL

Where desktop_child is the group assigned to all children in the tree from desktop_user.

This allows desktop_user to sudo all it's children, but not vice versa.

  • I'm confused how "sudo all" grants the user the same file permissions as another user (as per your question). – Jeff Schaller Jan 1 '18 at 14:21
  • I used the set group flag on the filesystem, forcing new files into the desktop_user group. – Terminator_NL Jan 1 '18 at 17:50

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