Em 18-01-2014 18:06, Bruce Dubbs escreveu:
> Pierre Labastie wrote:
>> Le 18/01/2014 17:35, Bruce Dubbs a écrit :
>>> Armin K. wrote:
>>>> On 01/18/2014 05:20 PM, Fernando de Oliveira wrote:
>>>>> 1. I discovered, the bad way, that cups-filters do not work, if you
>>>>> update or reinstall cups.
>>>>>
>>>>> The instructions:
>>>>>
>>>>> rm -rf /usr/share/cups/banners &&
>>>>> rm -rf /usr/share/cups/data/testprint
>>>>>
>>>>> remove them.
>>>>>
>>>>> Is it worth a note or comment in cups page about that?
>>>>>
>>>>
>>>> Maybe this is worth another thread, but better question would be: Do we
>>>> want support package updates?
>>>
>>> I think we do. It makes the book much more useful.
>>>
>>> -- Bruce
>>>
>> So, I think we'd have to change the instructions on the Linux-Pam page.
>>
>> It has:
>>
>> rm -rfv /etc/pam.d
>>
>> That is OK when shadow and/or sudo do not have PAM support. But when they
>> have, that instruction locks you out of your own system!
>> You cannot su, sudo, &c anymore. And if you log out, you cannot log in
>> anymore
>> either...
>>
>> If we want to support updating, the instructions should be:
>> ! [ -d /etc/pam.d ] && install -v -m755 -d /etc/pam.d
>
> Perhaps just
>
> mkdir -p /etc/pam.d
Bruce, the install without the test works just fine. I would only add -i
in the mv of backups, to be sure not overwriting a previpus saved.
>
>> ! [ -r /etc/pam.d/other ] || mv /etc/pam.d/other{,.save} &&
>
> [ -r /etc/pam.d/other ] && mv /etc/pam.d/other{,.save} &&
>
>> cat > /etc/pam.d/other << "EOF"
>> auth required pam_deny.so
>> account required pam_deny.so
>> password required pam_deny.so
>> session required pam_deny.so
>> EOF
>>
>> make check
>>
>> [ -r /etc/pam.d/other.save ] &&
>> mv /etc/pam.d/other{.save,} ||
>> rm -rfv /etc/pam.d/other
This part is fundamental, Pierre. In the book, the instruction removes
the entire directory:
rm -rfv /etc/pam.d
Even if nothing else is done, at least this one should be fixed as
Pierre suggested.
>>
>> With some adequate words in "command explanations" or in the text (even a
>> warning about the risk of being unable to log in again)
>>
>> Any thoughts
>
> In general I think a sentence or two about reinstalling would be enough.
> Most of the time the issue would be for configuration files.
--
[]s,
Fernando
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