sudo messed UP!(SOLVED!)

[Ricardo C O Freitas]

On Saturday 26 May 2007 18:54, Matthew Flaschen wrote:

Thanks Mitch and and Matthew!

That was it!

The '-a' switch was the answer.

I'm back on business again! :-)

Ricardo


> Mitch Contla wrote:
> > On 5/26/07, Ricardo C O Freitas <ricardo.cofreitas at terra.com.br> wrote:
> >>  I was trying to add the user to cups, following cups site info:
> >>
> >> with this:
> >>
> >> usermod -G lpadmin myuser
> >>
> >> The result was a mess!
> >>
> >> Many of the services are not allowed to me as user anymore!
> >>
> >> When as user I type:
> >>
> >> sudo mc
> >
> > usermod can be dangerous. The correct syntax is:
> >
> > $ sudo usermod -aG lpadmin myuser
> >
> > The 'a' option appends the user to the group, without it, you make the
> > user of the specified group and remove membership from all others. The
> > net effect
> > is that your user account is no longer a member of 'admin'.
> >
> > For the future, Ubuntu (Debian) provides some 'friendlier' tools for user
> > administration including 'adduser'. The syntax below is the preferred
> > method
> > for adding a user to a group:
> >
> > $ sudo adduser myuser lpadmin
> >
> > This would have left membership in all other groups.
> >
> > Also, if you installed the cups package from the Ubuntu repositories, I
> > think 'myuser' would have automatically been made a member of lpadmin.
> >
> > As far as the fix goes, if you have another user account that is a
> > member of
> > admin, login using that account and add 'myuser' back to the appropriate
> > groups. If you don't have another 'admin' account, you need to either
> > boot in to single user mode
>
> This is the recovery mode option that should be in the GRUB menu.  See
> http://www.linuxtopia.org/online_books/system_administration_books/ubuntu_s
>tarter_guide/ch08.html .
>
> When you're logged in as root, run:
>
> sudo usermod -aG adm,dialout,cdrom,floppy,audio myuser
>
> But list all the groups Mitch mentioned.
>
> Matt Flaschen
>
> > adm
> > dialout
> > cdrom
> > floppy
> > audio
> > dip
> > video
> > plugdev
> > users
> > lpadmin
> > scanner
> > myuser
> > admin

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