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

[Harald Hoyer]

Am 30.03.2011 13:54, schrieb Lennart Poettering:
> Heya,
> 
> I just uploaded a new version of systemd into F15, which establishes a
> directory /run in the root directory. Most likely you'll sooner or later
> stumble over it, so here's an explanation what this is and why this is.
> 

dracut and udev versions are here:
udev-167-1.fc15 : https://admin.fedoraproject.org/updates/udev-167-1.fc15
dracut-009-3.fc15: https://admin.fedoraproject.org/updates/dracut-009-3.fc15