Re: id bug

[Ostap Kutsyy]

These commands are launched just after the adding my current user 'ostap' to 
the 'root' & 'cvs' groups. So I have noticed 2 unconjectured things:

1. If I add me (user 'ostap') to some groups, it is not very convenient to 
logout & login every time. As far as I can see, this is a kernel restriction 
or mistake. But this is still very unconjectured & inconvenient.

2. As to the 'id' utility: is this normal that it shows only 2 groups for the 
current process (which is still under the 'ostap' user) and 4 groups if the 
user name is given. Taking into account previous note, the behaviour of 'id' 
becomes clear but still very unconjectured.

Saturday 09 December 2006 06:06, Bob Proulx you wrote:
> Ostap Kutsyy wrote:
> > address@hidden ~]$ whoami
> > ostap
>
> Your current user name associated with your current process effective
> uiser id is ostap.  Looks okay to me.
>
> > address@hidden ~]$ id ostap
> > uid=504(ostap) gid=504(ostap) groups=504(ostap),0(root),6(disk),501(cvs)
>
> Lists the user and groups of the 'ostap' user if that user were to log
> in at this moment.  Does not list the current process.  Does not list
> past history of the process.  Does not list future possibilities.
>
> > address@hidden ~]$ id
> > uid=504(ostap) gid=504(ostap) groups=501(cvs),504(ostap)
>
> Did you recently add 'ostap' to the 'root' and 'disk' groups?  Have
> you logged in since then?
>
> > address@hidden ~]$ id -un
> > ostap
>
> Basically the same as 'whoami'.  Looks okay to me.
>
> > address@hidden ~]$ id -Gn
> > ostap cvs
>
> Again the group information.  Looks okay to me.
>
> > address@hidden ~]$ id -Gn ostap
> > ostap root disk cvs
>
> Lists the groups of the 'ostap' user if that user were to log in at
> this moment.  Does not list the current process.  Does not list past
> history of the process.  Does not list future possibilities.
>
> As noted in the documentation for id:
>
>   `id' prints information about the given user, or the process running
>   it if no user is specified.
>
> The command prints *either* the specified user *or* the current
> process.  Those may be different.
>
> The kernel only places the user in the groups when the process is
> launched at login time, usually through PAM.  You need to log in to
> get current settings.  Usually that means logging out but you could
> 'ssh localhost' for example to spawn a login session through ssh.  See
> the initgroups(2) and setgroups(2) man pages for more information.
>
> Bob

-- 
_____________________
Best regards,
Ostap Kutsyy <address@hidden>, Hsphere Unix Developer,
Positive Software Corporation <http://www.psoft.net>,
a Comodo Group Company <http://www.comodogroup.com>