How to allow one user -- but not all -- to access files of another user in Ubuntu?
I have a directory /home/alice/dir
owned by alice
:
$ cd /home/alice
$ ls -l
drwxr-x--- 2 alice alice 4096 Feb 10 21:24 dir
i.e., owner alice
and group alice
have read/execute access. Of course, /home
and /home/alice
are readable/executable for all (drwxr-xr-x
), which is the default configuration for Ubuntu.
I want to allow user bob
access to this directory, but any other user eve
should not have access.
What I did so far was:
$ sudo adduser bob alice
and now
$ getent group alice
alice:x:1001:bob
so now bob
is in the group alice
.
However, still bob
cannot access the directory:
$ whoami
bob
$ cd /home/alice
$ pwd
/home/alice
$ ls -l
drwxr-x--- 2 alice alice 4096 Feb 10 21:24 dir
$ groups bob
bob : bob alice
$ cd dir
bash: cd: test: Permission denied
What's wrong?
Users were created with
sudo adduser alice
sudo adduser bob
sudo adduser eve
Ubuntu 14.04. I think ACL are not used, and I don't want to use them -- I think what I want should be perfectly achievable without ACL.