Hi George,
thank you for answering me..
Yes I have two user name how you said
what you say is right:
<"You should not need to be in the wheel group if your username is in "/etc/sudoers"">.
My name was not , at the moment that I had the problem, in the sudoers file .
Later I added it , and this wast enough to gain again the sudo privileges..
Probably the cancellation was caused by the command
<sudo usernod -G audio <my_name>
Now the problem is solved, as well it seems me strange that adding a new group to a user should delete it from the list of sudoers
Again thank you to all that tried to help me
Angelo
On Sun, Dec 27, 2020 at 5:10 PM Qiyu Yan <yanqiyu@xxxxxxxxxxxxxxxxx> wrote:
George N. White III <gnwiii@xxxxxxxxx> 于2020年12月27日周日 下午10:28写道：
>
> On Sun, 27 Dec 2020 at 05:32, Angelo Moreschini <mrangelo.fedora@xxxxxxxxx> wrote:
>>
>> Hi
>>
>> some days before, I had a problem about using the "beep" function..
>> ... working around, to solve my problem, I got the suggestion to register myself in the "audio group" ..
>> I made it using these commands:
>>
>> sudo adduser <my_name> audio
>
>
> This should have given a usage error:
>
> Usage: adduser [options] LOGIN
> adduser -D
> adduser -D [options]
>>
>> and also :
>> sudo usernod -G audio <my_name>
>
>
> I assume this was "sudo usermod -G audio <my_name>". This will replace the list of
> supplementary groups with just "audio", which will remove sudo privileges. You need
> "--append" (or "-a") to append "audio" to the supplementary groups.
>
>
> What did you use for <my_name>? You seem to have two user names:
> "angelo_user" and "angelo_dev".
>
>>
>>
>>
>> Actually (after this) I no longer have (I lose the) sudo privileges (I think, in consequence of these actions).
>> As well my name still appears inside the /etc/sudoers/ file..,
>>
>> ## Allow root to run any commands anywhere
>>
>> root ALL=(ALL) ALL
>>
>> angelo_user ALL=(ALL) ALL
>>
>> (but i am not anymore in the wheel group)
>
>
> If you no longer have a login with sudo privileges you will need to boot
> another system (e.g., a live distro from a USB key) to
>>
>>
>> When i try to use the sudo privileges, I get the message :
>> <"angelo_dev is not in the sudoers file. This incident will be reported.">
>
>
> Check the list of groups for "id", "id angelo_dev" and "id anglo_user".
>
>>
>>
>> In conclusion :
>>
>> I am still registered in the /etc/sudoers file
>> I am not anymore registered in the wheel group.
>>
>> I think it could be enough to register me in the "wheel" group again, in order to still get the sudo privileges, but I am not completely sure about this :
>> ....because to be registered in /etc/sudoers is not enough ??...
>> (how it works the management of sudo privileges ? )
>
>
> You should not need to be in the wheel group if your username is in "/etc/sudoers".
I an in doubt of this, PolicyKit things don't respect sudoers file,
IIRC. So if you are in sudoers but not wheel, you will have problem in
some GUI apps or systemctl commands.
I think in this case, just adding yourself in wheels by sudo usernod
-G -a will be enough.
>>
>>
>> I would like sono help
>>
>> tank you
>> regards
>>
>> Angelo
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>
>
>
> --
> George N. White III
>
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