Re: Bash invocation, was Re: 60-serial.rules, broken

[David Wright <deblis@lionunicorn.co.uk>]

On Fri 09 Jun 2023 at 09:41:23 (-0400), gene heskett wrote:
> On 6/9/23 06:51, David Wright wrote:
> > On Fri 09 Jun 2023 at 06:20:07 (-0400), gene heskett wrote:
> > > On 6/9/23 00:46, tomas@tuxteam.de wrote:
> > > > On Thu, Jun 08, 2023 at 09:08:59PM -0400, gene heskett wrote:
> > > > 
> > > > [...]
> > > > 
> > > > > Perhaps I've ben mistaken, but the files in /etc/udev/rules.d are not the
> > > > > same as /lib/udev/rules.d, so which one actually rules?
> > > > 
> > > > The one in /etc, as David said. Unless it doesn't exist.
> > > > 
> > > > This is actually the classical pattern of "layered configuration", which
> > > > is widespread in the UNIX world. You see that often with a system config
> > > > which can be overridden by a user config.
> > > > 
> > > > Sometimes you have even three layers: distro (e.g. lib), local (etc) and
> > > > user.
> > > 
> > > Thanks for the clarification Tomas. That would intimate the search
> > > order would be /home/$usr/someplace, /etc/someplace, /lib/someplace.
> > > Is that correct?
> > 
> > Not only did I give the priority for the task you're tackling
> > (which BTW would not concern an individual user's directory tree),
> > I also gave you the reference: man udev.
> > 
> > What is your problem??
> > 
> man udev is as opaque as you can make what looks like plain English.

I find it hard to believe that the exams you're always talking about
having passed are any easier than understanding:

 "All rules files are collectively sorted and processed in lexical
  order, regardless of the directories in which they live. However,
  files with identical filenames replace each other.
  Files in /etc/ have the highest priority, files in /run/
  take precedence over files with the same name under /usr/.
  This can be used to override a system-supplied rules file
  with a local file if needed"

But paraphrasing myself, not only did I give you the reference,
I also gave you the priority for the task you're tackling:
 "Files under /etc/ take priority over those under /usr/lib/
  when their filenames are the same."

Cheers,
David.