Thanks for the Virus.

Jonas Norlander jonorland at gmail.com
Wed Mar 18 19:22:06 GMT 2009


2009/3/18 Paul Lemmons <paul at lemmons.name>:
> -------- Original Message  --------
> Subject: Re:Thanks for the Virus.
> From: Jonas Norlander <jonorland at gmail.com>
> To: Kubuntu Help and User Discussions <kubuntu-users at lists.ubuntu.com>
> Date: 03/18/2009 09:49 AM
>>
>> 2009/3/18 Kaj Haulrich <kaj at haulrich.net>:
>>
>>>
>>> On Wednesday 18 March 2009 16:51:26 Jonas Norlander wrote:
>>>
>>>>
>>>> 2009/3/18 Nils Kassube <kassube at gmx.net>:
>>>>
>>>>>
>>>>> Dotan Cohen wrote:
>>>>>
>>>>>>
>>>>>> if someone of my
>>>>>> apparent above-average skill level cannot reset the X server
>>>>>> without C-A-B, then what is the casual user to do? Serious
>>>>>> question.
>>>>>>
>>>>>
>>>>> Reboot. Seriously, what is wrong with that approach? If you
>>>>> don't know a better way to get back to a usable machine, IMHO
>>>>> rebooting isn't that bad. If you use C-A-B you lose unsaved
>>>>> data of applications still running. If you reboot you lose
>>>>> unsaved data of applications still running.
>>>>>
>>>>
>>>> I was thinking on that.
>>>> My guess is that a C-A-B will send a SIGKILL to the X-server and
>>>> it will kill all it's children making you loose everything thats
>>>> not saved and leaving damaged files. Rebooting is sending a
>>>> SIGTERM (and later SIGKILL) to all processes still running and
>>>> depending on the program it still got a change to save data and
>>>> close files, It will not save your OpenOffice documents but other
>>>> data like config files have a change to shut down more graceful.
>>>> Any know how X and KDE will handle a reboot from CLI? Is it safer
>>>> then C-A-B?
>>>>
>>>
>>> An even safer method - if everything locks up - is to use the
>>> "elephant sequence" - assuming the keyboard is still functioning.
>>>
>>>
>>
>> I did a quick google search on "elephant sequence" and not much turned
>> up but some disney movie and some old mails from you. Do you mean the
>> SysRq keyboard shortcuts?
>> Thats probably the best way if you cant get a console, but it have
>> some drawbacks, like it want run any shutdown scripts. So if one still
>> can access a console and run commands i think the safest method is to
>> run reboot/shutdown.
>>
>> / Jonas
>>
>>
>
> I think this is what is being referenced...
>
> http://en.wikipedia.org/wiki/Magic_SysRq_key#.22Raising_Elephants.22_mnemonic_device
>

We are really getting OT here but at the bottom if that wikipedia page
there a link to a good and easy to read guide about how to kill
programs in Linux.
http://en.wikibooks.org/wiki/Linux_Guide/Freezes

/ Jonas



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