How to give to some user permissions only to subfolder [closed]

问题

I have root permissions on my server and I want to give permissions to particular groups and users of it. There is a one case, there is directory tree:

  dir1
    ├── subdir1
    ├── subdir2
    ├── subdir3

I have three users (user1, user2, user3) - i want each of them to have permissions only to one directory (user1 - subdir1, user2 - subdir2, user3 - subdir3). User1 should not be able to see whats int subdir2 or subdir3, but he cant see that they exist, same with other users and their dirs.

I give persmissions using getfacl and setfacl commands.

What permissions should these users have to dir1 and subdirs?

回答1:

To allow all users see list of files in dir1 set permissions 0755 to this folder

$ chmod dir1 0755

To separate access to subfolders assign owner to each folder:

$ cd dir1

$ chown user1:user1 -R subdir1
$ chown user2:user2 -R subdir2
$ chown user3:user3 -R subdir3

Now make subfolders readable only for theirs owners:

$ chmod user* 0700

Now all users see that folders user* exist, but they can enter only in own folder

Update Sorry, can't format text in comments.

When I have more users than these three, and I want only these three to be able to enter dir1 - what then?

Then you have to assign them one special group and allow this group to read content of dir1.

Create group specialusers

$ groupadd specialusers

Add users in this group

$ usermod -aG specialusers user1
$ usermod -aG specialusers user2
$ usermod -aG specialusers user3

Allow specialusers to read folder

$ chown root:specialusers dir1
$ chmod dir1 0750

Now only users from in group specialusers can see a list of folders under dir1

来源：https://stackoverflow.com/questions/19110891/how-to-give-to-some-user-permissions-only-to-subfolder

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Linux

Ubuntu

permissions

debian