Re: How to use udev ?

[Greg KH <greg@kroah.com>]

On Mon, Apr 12, 2004 at 12:33:25AM -0400, John D. Coleman wrote:
> This message is intended primarily for the developer of udev but in 
> case someone else has these same questions, I'm sending it to the 
> mailing list.
> 
> 
> #1
> I went to 
> https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel & 
> clicked on 
> http://sourceforge.net/mailarchive/forum.php?forum=linux-hotplug-devel. 
> I then received this message :
> 
> ERROR
> 
> Either your mailing list name was misspelled or your mailing list has 
> not been archived yet. If this list has just been created, please retry 
> in 2-4 hours
> 
> Is the mailing list new or misspelled ?

No, and no.  sf.net mailing list archives suck.  Use either of the
following ones instead:
	http://marc.theaimsgroup.com/?l=linux-hotplug-devel&r=1&w=2

	http://news.gmane.org/gmane.linux.hotplug.devel
(the gmane.org one is much nicer to read mail threads)

> #2
> I downloaded udev-024.tar.gz and while reading the README file : "Make 
> sure that you have the latest version of the linux-hotplug scripts". I 
> followed the given URL and found the following files:
> diethotplug-x.x
> fxload
> hotplug
> hotplug-base
> hotplug-core
> hotplug-fxload
> hotplug-utils
> sysutils
> udev
> + a few documents
> QUESTION: Which one of these files is the required scripts? and what 
> are these files ? An index in this directory would be nice.

See the linux-hotplug.sf.net web site download area for the latest
version of the scripts.  Or just rely on your distro to keep you updated
:)

> #3 - My main question
> After I install udev, can I delete my /dev directory ? As long as I 
> don't boot anything other than Linux-2.6.x.

If you are brave, yes.  But I would not suggest doing that, if you
follow the directions, a ramfs will be mounted on top of your current
/dev allowing you to run 2.4 kernels also.  So keep those device nodes
around, you might need them sometime

> #4
> After udev is installed, will all programs then start looking for 
> devices using udev or must the source code for those programs be 
> changed specifically to use udev?

Programs do not "look for devices using" anything.  They just refer to
device nodes in /dev.  If you have written udev rules that name your
devices differently from what your program is normally expecting, then
you will have to reconfigure your program to point to the proper /dev
file for the device.

Hope this helps,

greg k-h


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