Can someone explain the /sys filesystem?

[Dave Jones]

On Fri, 2004-02-06 at 16:16, Daniel Durgin wrote:
> I looked around /sys, and it seems very easy to
> understand.  But when I boot to the 2.6 kernel I made,
> CD-ROM is /dev/scd0, not /sys/block/hdc.(ide=scsi in
> NOT enabled.

That's very odd. I can't really explain that.
Care to post boot messages ?

> So how does /sys relate to the /dev filesystem?
>  I thought it was supposed to replace it.

No. udev can create a dynamic /dev directory based upon information
it gathers from /sys and hotplug events.

>  What about /proc, is that going too?

No. That would break far too much userspace.

	Dave