User privacy

[Volker Wysk]

Am Dienstag, den 16.02.2021, 23:23 +0800 schrieb Bret Busby:
> On 16/02/2021, Volker Wysk <post at volker-wysk.de> wrote:
> > Hi
> > 
> > Am Dienstag, den 16.02.2021, 14:18 +0000 schrieb Ian Bruntlett:
> > > Hi,
> > > 
> > > I'm sorting out an existing Lubuntu 18.04 laptop for a mother and
> > > daughter. At the moment when I run umask I get the result "0002" which I
> > > believe means that different users can read each other's files in their
> > > $HOME directories. They want to stop each other from reading their files.
> > > 
> > > Now I have a rough idea on how to arrange this. I believe a different
> > > umask value has to be specified however I don't know:-
> > > * What value of umask to use
> > > * Where to set that value so that it is set as the default on
> > > bootup/login.
> > 
> > You don't need to touch the umask. Just delete the permissions for "others"
> > on the home directories:
> > 
> > chmod o-rwx /home/HOMEDIR1
> > chmod o-rwx /home/HOMEDIR2
> > 
> > Bye,Volker
> > 
> 
> Is it "others" or "group"?
> 
> I preferred it when it was numbers; the 777 system, so, for example,
> chmod 007

It's "others". Each user should have its own private group with the same
name as the user name and only that user in it. So the group ownership or
permissions should not be a problem.

That "chmod 007" of yours would grant all permissions the "others" and none
to the owner and group. I believe you mean "770". The umask specifies who-
is-NOT-allowed-what. It's the reverse of what chmod takes, when using
numbers.

Bye,
Volker
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