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sge_kane
Tux's lil' helper
Joined: 10 Oct 2004
Posts: 84
Location: Germany (Frankfurt)
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 Posted: Wed Dec 08, 2004 6:38 pm Post subject: udevinfo -q path -n /dev/foo brings empty output |
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Hi folks,
as stated in the subject, this happens:
| Code: |
moria kanne # udevinfo -q path -n /dev/input/mouse1
moria kanne #
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So well, I got no idea why it is not working. Udev is up and running... Error cannot be there...
I want to use it, as it is much easier to find proper paths in the sysfs, so a great help for the creation of rules...
| Code: |
udevinfo -a -n /sys/foo
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works without any flaws...
Many thanks for suggestions.
btw
I'm running 2.6.9-nitro4 and sysfs is properly mounted to /sys
sge_kane |
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Yogi-CH
Guru
Joined: 19 Apr 2004
Posts: 372
Location: Somewhere in Texas, last I remember...
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| Posted: Mon Jul 11, 2005 10:14 pm Post subject: Re: udevinfo -q path -n /dev/foo brings empty output |
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| sge_kane wrote: | Hi folks,
as stated in the subject, this happens:
| Code: |
moria kanne # udevinfo -q path -n /dev/input/mouse1
moria kanne #
|
So well, I got no idea why it is not working. Udev is up and running... Error cannot be there...
I want to use it, as it is much easier to find proper paths in the sysfs, so a great help for the creation of rules...
| Code: |
udevinfo -a -n /sys/foo
|
works without any flaws...
Many thanks for suggestions.
btw
I'm running 2.6.9-nitro4 and sysfs is properly mounted to /sys
sge_kane |
FWIW:
My personal opinion is that the udevinfo command is busted. I can copy/paste a similar command to yours right out of the udevrules guide and it'll come back with unknown query type. The only successful command was dumping the database. I am on 2005.0 (using KDE-3.4.1). When I was on 2004.3 --> 2005.0 (using KDE-3.3.2) the udevinfo command seemed to work okay.
Since the command seems to be worthless I executed rm /usr/bin/udevinfo and yawned.
Small comfort, I know. You are not alone.
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...Yogi |
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frozenJim
Guru
Joined: 18 Jun 2004
Posts: 341
Location: Montreal, Quebec, Canada
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| Posted: Tue Oct 11, 2005 1:19 am Post subject: |
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Yeah... all these wiki entries are real nice... but udevinfo sure does not work on any system I have ever built.
I rebuilt a P4 this week - fresh everything - very minimal. Hotplugging works fine, /sda1 is automounting just great with ivman... but udevinfo still seems "screwed".
Some commands work.. but not the "first" one you find in every tutorial out there: | Code: | | udevinfo -q path -n /dev/sda |
Just a nice happy set of blank data gets returned. So my journey through udevinfo-tutorial-land winds up at a dead end immediately.
I suppose somebody must have written udevinfo. What a monstrous waste of time to write software with no documentation. So now, instead of writing the wiki for it - we will find it simpler to reinvent the program and rewrite it just so we can have documentation.
What can it be doing anyhow? Just a simple grep through /sys right? Maybe we oughta just learn how to grep better - like REAL Linux guys? I BET that this is why the guru's aren't complaining about udevinfo - they know how to use grep.
grrrr.... The only and tragic flaw with Linux is the lack of documentation.
Grrrrr.... 
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Who controls the past, controls the future. Who controls the present, controls the past. |
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sge_kane
Tux's lil' helper
Joined: 10 Oct 2004
Posts: 84
Location: Germany (Frankfurt)
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| Posted: Tue Oct 11, 2005 8:30 am Post subject: |
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| frozenJim wrote: |
grrrr.... The only and tragic flaw with Linux is the lack of documentation.
Grrrrr.... |
You really mean that? If you ask me, documentation for Linux stuff is in most cases lots better than for any other, you know which one I think of, OS....
I think, it's just that some basic low-level things are more manual than on other OS, but that is what most Linux users, just as me, don't mind....
As far as grep is concerned, I gotta say, it's an easy to use tool, if you know how to form regular expressions....
And concerning the topic of this thread:
I should have written earlier, since I opened it, some long time ago, that udevinfo works for me now. In my case it just was some screwed up udev version. Next time I remerged that
package with a new version the commend did what I wanted it to. Right now, I still have udev-056, didn't emerge system/world for some time, that works flawlessly....
Cheers,
sge_kane |
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frozenJim
Guru
Joined: 18 Jun 2004
Posts: 341
Location: Montreal, Quebec, Canada
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| Posted: Tue Oct 11, 2005 10:36 am Post subject: |
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all right.. all right....
I don't really mean it.
Looking around my little office here, I see at LEAST $10,000 in Micro$oft-related manuals. Each at about $85.00CDN. Not a single one of them is valid for current software. Very few of them actually answered the question that they were purchased to answer.
So, Yeah, yeah.... 
Nothing will ever get me back to the Micro$oft world. And Linux's documentation still sucks.
(can you run the line: udevinfo -q path -n /dev/sda ? I suspect it won't work because of changes in how udev is creating my devices. Maybe?)
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