GUI added users not added to the "users" group.

[Stephen Martin]

On Sun, 2014-08-03 at 08:40 -0400, Robert Heller wrote:
> At Sun, 3 Aug 2014 08:08:09 +0100 "Ubuntu user technical support,  not for general discussions" <ubuntu-users at lists.ubuntu.com> wrote:
> 
> > 
> > On 3 August 2014 07:04, sudormminusrf yeah <sudormminusrf at gmail.com> wrote:
> > > I noticed today that users added using the GUI tool are not added to the the
> > > general "users" group. In fact not even the user added at installation is
> > > added to the "users" group.
> > >
> > > I assumed that the users group existed for all "human" users. I could see
> > > why users created with "useradd" would not automatically get added to the
> > > "users" group, but GUI added users are most of the time going to be human.
> > 
> > I don't think the users group has any great significance in Ubuntu.
> > At least I am not aware of any.
> 
> There has been a general movement *away* from using the 'users' group as a 
> default group to put normal users in.  The current logic is to put each user 
> in a group of their own.  That is, for user 'a', one creates a group 'a' with
> one member, 'a'.  This is an enhanced security in terms of making user a's 
> files inaccessable by user b.

I could understand that if the default permissions on home folders were
setup so that only owners or the group could access the files but anyone
can access them, the defaults are 644 on a file and 755 on a directory
which IMHO is insane.

So there is no security benefit unless users change the permissions on
the files and in that case they could just as easily do a 700 ( and be a
member of the "users" group than a 750 and be a member of there own
group.

Its would be just an elegant way of saying okay any human users can
share `drwxrwx--- 15 root users /var/human/` without having to manage
the what seems automatic but isn't "users" group.