What's this /run directory doing on my system and where does it come from?

[Ralf Corsepius]

On 03/30/2011 04:12 PM, Jaroslav Reznik wrote:
> On Wednesday, March 30, 2011 04:05:27 PM Orcan Ogetbil wrote:
>> On Wed, Mar 30, 2011 at 9:21 AM, Lennart Poettering  wrote:
>>> On Wed, 30.03.11 15:08, Ralf Corsepius  wrote:
>>>> On 03/30/2011 02:30 PM, Lennart Poettering wrote:
>>>>> On Wed, 30.03.11 18:04, Rahul Sundaram wrote:
>>>>>
>>>>>
>>>>> Also, can somebody point me to the place where the FHS would say "no
>>>>> other directories below / are allowed"? I can't find that. And hence
>>>>> this change is perfectly FHS compliant.
>>>>
>>>> It's in the preface of the root file system section:
>>>>
>>>> http://www.pathname.com/fhs/pub/fhs-2.3.html#THEROOTFILESYSTEM
>>>>
>>>> <cite>
>>>> Applications must never create or require special files or
>>>> subdirectories in the root directory. Other locations in the FHS
>>>> hierarchy provide more than enough flexibility for any package.
>>>> </cite>
>>>
>>> Well, we are not an "application", are we?
>>
>> I think, for the first time in Fedora history, I agree with Lennart.
>
> +1, me too :)))
>
> R.
>
>> After reading the above reference, this does not seem like an FHS
>> violation. Even if it is, it is the FHS that needs to be updated.

Then you might be able to explain the difference between a script being 
launched by systemd and any other  arbitrary script?

I don't see any,