Software :: UDEV Rule Not Running A Command?
Aug 1, 2010
I have a UDEV rule below that maps a symlink from a specific usb device and 'Should' run a command.
Code:
BUS=="usb",SYSFS{serial}=="1111111111111111111111111111",SYMLINK+="myusbstick_%n",RUN+="/usr/local/bin/my_command"
The symlink part is fine but it does not appear to run the command when I plug the device in. I can run the command "/usr/local/bin/my_command" from the shell fine.
Code:
mount /dev/myusbstick_1 /media/TMPUSB && cryptsetup luksOpen /dev/md5 md5_crypt --key-file=/media/TMPUSB/key && vgscan && vgchange -ay && mount -a && umount /media/TMPUSB
What am I missing. I have tried +x in owner,group and other.By the way what does UDEV run as, I assumned +x on ROOT as that is the owner should be enough.
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Jan 13, 2010
I'm running Ubuntu 9.10 (Karmic Koala) on a laptop and would like NumLock to automatically toggle depending on whether my USB keyboard is plugged in (numlock on) or unplugged (numlock off).
To accomplish this, I first installed the "numlockx" package. numlockx on and numlockx off works fine.
To hook into the device system, I thought I'd use udev. I have read "Writing udev rules", but I'm having trouble getting the udev rule to work.
First, here's an example of the dmesg output:
[20906.985102] usb 3-2: new low speed USB device using uhci_hcd and address 6
[20907.166403] usb 3-2: configuration #1 chosen from 1 choice
[20907.192904] input: Microsoft Natural® Ergonomic Keyboard 4000 as /devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.0/input/input20
[20907.193100] microsoft 0003:045E:00DB.000B: input,hidraw1: USB HID v1.11
[Code]....
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May 23, 2010
I am trying to write a udev rule for my headset but i don't understand where i get the information to make the rule. I know i need to add
Code: RUN+="bash /home/luke-jennings/headset" at the end of it so the script i wrote runs. I don't know how to get any of the identifying info for the headset and which bits to use where. How do I get the information?
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Jun 3, 2010
I'm trying to set my network interfaces so that they don't get random every boot.(eg assign eth0 to a network interface with a given MAC addr, and eth1 to the other one)I trew in a udev rule (in fact just modified the rules that was automatically generated and set the ethX in it) but the system ignores my udev rule.What am I missing ?Here is all the info :
Code:
$cat /etc/udev/rules.d/70-persistent-net.rules
# This file maintains persistent names for network interfaces.
[code]....
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Mar 29, 2011
I am not good at writing udev rules. I am using RHEL 4.7, I would like to invoke a file install.sh which is in CDROM as soon as the CDROM is inserted
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May 2, 2011
On Ubuntu 10.04 I would like to setup udev to execute a backup script when a specific USB drive is inserted. Udev detects the USB drive, but my script is executed 7 times instead of just once. Can't figure out what's wrong.
My udev rules file:
Code:
/etc/udev/rules.d# cat 20-stick.rules
ACTION=="add", ATTRS{vendor}=="Kingston", ATTRS{model}=="DataTraveler G2 ", RUN="/usr/local/bin/sync.sh"
Dummy backup script: connecting USB drive results in 7 times date written to /tmp/test
code....
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May 12, 2010
i need all my /media/* newly created by insertion of usb drives, chmodded 666.I tried some tips using various threads, but i failed.I'm on Slack 64 13.0.
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Sep 19, 2010
I'm having some trouble with udev, in that it won't create me a symlink for the infrared device which is part of my Hauppauge Nova-TD-500 TV card.I've got the card installed, and for the most part working, but I want to have the infrared device on /dev/ir.I've created a rule in /etc/udev/rules.d/ called 55-dvb_usb_dib0700-ir.rules which contains this:
Code:
SUBSYSTEM=="input", ATTR{name}=="IR-receiver inside an USB DVB receiver", RUN="/bin/date > /home/xbmc/foo", SYMLINK+="ir"
[code]....
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May 29, 2011
I'm trying to configure gpsd 2.96 to start automatically from udev rule on a Slack 13.37 box.1. I've compiled and installed gpsd from sources and made sure it starts manually.2. I've copied the /lib/udev/gpsd.hotplug and /lib/udev/gpsd.hotplug.wrapper scripts in their places from the source tree and made them executable.3. I've copied the gpsd.rules file from sources into /etc/udev/rules.d4. I renamed it 99-persistent-gpsd.rules to run late in the bootup process.5. I've copied the /etc/default/gpsd file from sources and made sure it has the right settings inside.
Now, for the results. If I plug the gps usb dongle in while the system runs, it starts gpsd if it is not started, and it connects to it just as it should. But if I start the system with the dongle in, gpsd doesn't get started during boot. I can't find any relevant message in /var/log/syslog or /var/log/messages for boot time. There is stuff there from when I plug the dongle in while the system is running though. It's like udev ignores the rules for it at boot time.Is there something in the Slackware boot scripts that would prevent running those scriptssd.hotplug.wrapper which in turn runs /lib/udev/gpsd.hotplug which is a Python script)?Here is the contents of 99-persistent-gpsd.rules (ignore the comments referring to Debian, it was meant for a Debian box). My usb gps adapter is the first one - the Prolific chipset one:
Code:
# udev rules for gpsd
# $Id: gpsd.rules 5861 2009-08-03 13:41:01Z bzed $
[code]....
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Apr 19, 2011
I have a trayless SATA hotswap bay that is really terrific for quickly attaching and removing SATA hard drives. I'm trying to write a udev rule to create a symbolic link to the device node for the drive that is attached through the hotswap bay (/dev/bay -> /dev/sdX). This eliminates any ambiguity when performing destructive tasks (fdisk, etc). I'm running squeeze amd64. I've read through several tutorials and have it working somewhat. Here's the output of udevadm info for a drive attached via the hotswap bay.
looking at device '/devices/pci0000:00/0000:00:11.0/host7/target7:0:0/7:0:0:0/block/sdb':
KERNEL=="sdb"
SUBSYSTEM=="block"
DRIVER==""
ATTR{range}=="16"
ATTR{ext_range}=="256"
ATTR{removable}=="0"
ATTR{ro}=="0"
ATTR{size}=="156301488"
ATTR{alignment_offset}=="0"
ATTR{capability}=="52" ....
Here is my udev rule
DEVPATH=="/devices/pci0000:00/0000:00:11.0/host7/*", SUBSYSTEM=="block", SYMLINK+="bay%n"
This produces the desired behavior and gives me an fdisk-able device node. The problem I am having is that the "host" component of the DEVPATH varies from bootup to bootup. I'm just using on onboard SATA, host2-7, specifically host7. There is also onboard PATA, host0-1. It seems to just be random which "host"s are assigned to which controller. For example, the next time I boot the system, the onboard SATA will be host0-5 and the onboard PATA will be host6-7. In this simple case, I could just write 2 rules, one for each possibility and it would still be correct because of the different PCI addresses of the two controllers. But on systems with more SCSI (uh... libata, actually) controllers, a "host" file can point to different physical ports between bootstraps. This would be bad. Does anyone know of a way to write a rule to tie a device node to a specific physical SATA port on the motherboard/hba?
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Jan 24, 2010
I have a netbook (MSI Wind U100 rebrand) that has one of those card readers built into the handrest. The thing is I've never used it once, and it keeps popping up in powertop as waking the cpu when it should just shut up and be quiet.Aside from breaking open the case and tearing it out, the immediate solution is to browse to /sys/bus/usb/devices/usb1/1-6/ and pipe 1 to the file remove. That disables it until system reboot or resume, at which point I have to do it all over again.
Code:
$ echo 1 | sudo tee /sys/bus/usb/devices/usb1/1-6/remove
Now I'd like to create an udev rule to make it not get initialized at all. A quick Google search found me this article on creating udev rules, and after toying about with the udevadm tool I managed to produce the attributes/properties of the device.
Code:
zorael@lethe:/sys/bus/usb/devices/usb1/1-6$ udevadm info -a -p $(pwd)
Udevadm info starts with the device specified by the devpath and then walks up the chain of parent devices. It prints for every device found, all possible attributes in the udev rules key format. A rule to match, can be composed by the attributes of the device and the attributes from one single parent device.
looking at device '/bus/usb/devices/usb1/1-6':
KERNEL=="1-6"
SUBSYSTEM=="usb"
DRIVER=="usb"
ATTR{configuration}=="CARD READER
[code].....
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Jul 16, 2010
Question (and Google results aren't making this clear): Ubuntu has both iptables & ip6tables installed. 1. If I set a rule in iptables, does that rule also apply to ipv6, or just ipv4?
2. If "no" to above, then it would be prudent to *also* set ip6tables rules as well if I want to maintain an active firewall, correct?
3. Does ip6tables rules have the same syntax and behavior (more or less) to iptables rules - i.e. can I just copy my iptables rules & change "iptables" to "ip6tables"?
4. Any gotchas or issues that I should be aware of?
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Feb 26, 2010
I am a card-carrying member of the Church of the Command Line. I would love to do away with X altogether, and just use the virtual consoles. What's stopping me is, of course, media. Images, movies and web browsing. I know about the framebuffer, and it seems promising but still kind of complicated. From what I've read it looks like I'd have to recompile my kernel everytime I wanted to change the background image. Not a showstopper, but more work than I would like.
Anyway, this post is about the possibilities, and hopefully some hints on how to get started. I know images are possible, and that there are codecs for mplayer to output to the framebuffer. What about web browsing? I've gotten into my gmail via elinks before.. although I can't remember if I was using the standard view or basic HTML.. probably basic HTML. Are things like inline images, javascript, embedded video and flash even theoretically possible in a console browser at this point? Or am I just talking fantasy here?
And, any guidance on getting started would be most appreciated, especially with background images. It looks like mplayer just needs the right codec and it'll work (correct me if I'm wrong please).. so that doesn't seem too bad. But the background images seem kind of involved. The only eye candy I even remotely want on my screen is a nice background image with the text floating on top. How can I accomplish this via the framebuffer?
[Edit: also, I should have made the title more descriptive, but apparently I can't edit that ]
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Mar 10, 2011
tell me the command for iptable rule to add in Chain RH-Firewall-1 to block ftp port & the ftp server was configured in public ip address,i searched in google but i did'nt get the exact command for iptables rule in Chain RH-Firewall-1.
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Sep 24, 2010
I'm modifying a working udev rule which runs a script that mounts a USB HDD and synchronises files to it.The USB HDDs have been troublesome, losing many files and even losing file systems a couple of timesTo investigate,I want to log the USB HDD product name and serial number so would like to pass ATTRS{product} and ATTRS{serial} values to the script.This may not be possible; I cannot see anything about how to do it in either the udev man page nor Daniel Drake's "Writing udev rules" Version 0.74 but it seems such an obvious thing to want to do, I'm wondering if I've overlooked something.
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Mar 12, 2010
I'm trying to get synergy+ to work on Fedora 12 on start up. I'd like to be able to log into Fedora using my keyboard and mouse through synergy+. I've tried adding the line
Code:synergyc <localipaddress> at the end of the /etc/rc.local file but I still can't use my keyboard and mouse to log in. I've also tried adding the lineCode:su <username> -c "synergyc <localipaddress>" to /etc/rc.local but it still doesn't work. Just to clarify, I do have synergy+ working on Fedora but I need to start it after logging in on each reboot by switching my keyboard over to the other computer.
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Jan 16, 2011
i have a shell script which some of the lines should be running as root and some other not.the problem is that su is not practically work,it means it take root password from me but it does not run the commands in script.the other problem is thatthere are some commands which should be run as normal user so how it exits from root mode and run that particular command. i tried exit in script file but it dos not work.
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Sep 24, 2010
Let's say 4 users have logged in on 4 different Virtual Consoles:tty1 .... tty4On tty4 is logged in User4.How can I log out the User4 from my console using the root login?I just checked out the man page of shutdown but didn't find any hint there. The logout command is also not doing the work. We cannot specify a username wit it to log him/her out.
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Nov 17, 2010
I am trying to use the at command to run a script file. The test was quite simple, wanted to run today and every 2 days.Here is the at command:at 15:20 today + 2 days -f every2daysDo.shHere is the script:echo "every2daysDo.sh ran on $(date)" >> /home/stacy/attest.logI see the 'output' of the echo command in my log file on today+2 days, but not on the day that I start it.
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Jun 3, 2011
I'm running this command, and seems not to work, following the command:Quote:for nic in `ls /sys/class/net | grep -v lo`; do echo ${nic}; udevinfo -a -p /class/net/{nic} | grep -i address; doneThe output is the following:Quote:eth0eth1But the output should show something like this: (showing the MAC address)uote:
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Jan 21, 2010
I am trying to run an scp command on my linux server, this is working fine, however I changed the output folder to one which has spaces and now when run, it's coming up saying SCP ambiguous target
Here's my string:
expect -c 'spawn scp -r /var/lib/asterisk/backups/Everyday/ administrator@192.1.1.1:
/Volumes/Data1/My Backup Folder/ ; expect assword ; send "MYPASSWORD " ; interact;'
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Jul 2, 2010
i am getting this error while running in rhel 5.3 -bash: sar: command not found
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Jul 29, 2011
I have two load balancing boxes... One primary (box1) and one backup/failover (box2). I want to make sure the heartbeat is running on both boxes via a script. While I'm on box1, I want to run as any user: ssh box2 service pulse status and not have box2 ask for a password.
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Apr 16, 2010
I am doing a audit on some Linux servers about 40. One off the recuirments is a list of Applications currently running on each server. Does anyone have a command that I can use to show the required info?
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Mar 13, 2011
I want to run a command on startup (Via startup applications) that has to wait for another program to run first.I don't seem to be able to use sleep to delay the command as it is stored in a .desktop file.How do I make it run later, preferably without having to create a script just for this one command.Also, how do I make the system start with compiz? Change "/desktop/gnome/session/required_components/windowmanager" ? Or do it the clean way by (Somehow) configuring gnome to use compiz?
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Jul 12, 2011
apt-get install startxwould sort this out but no joy. I don't seem to actually be able to get anything using apt-getI've tried running apt-setup but the command isn't recognised.I'm sure I'm connected up to the internet (I'm using a wired connection I run dhclient eth0 and check with ifconfig and eth0 seems all happy and connected up). I'm also trying to install mpg321 or mpg123 as it would be nice to have some tunes but I get the same "package not found" error message
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Sep 11, 2011
If I start a script that is going to take a long time, I inevitably realize it after I've started the script, and wish I had a way of doing some kind of alert once it finishes.
So, for example, if I run:
really_long_script.sh
and press enter...how can I run another command once it finishes?
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Apr 28, 2010
How do you actually install ubuntu? I cant figure it out, its nothing like windows! I download the unetbootin to make a boot usb drive.. I did that but when it boots it ask goes blue with a thing flash default. Then it asks me to press tab, when I do that it comes with a cmd. What should a write? If I click esc on the keyboard it brings a cmd line. If I write like E:dir it says kernel invalid. What is a cmd that runs the cd on a boot for ubuntu. How hard is to install it??
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May 7, 2010
What's the command for running natilis as root? What about my natilis spelling?
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Dec 23, 2010
I need some help desperately, and would appreciate a quick response. To begin, here's the output from 'uname -a' for the machine I'm using: Linux ubuntu 2.6.35-23-generic #41-Ubuntu SMP Wed Nov 24 11:55:36 UTC 2010 x86_64 GNU/Linux
Now, when I start my computer, cupsd is running:
[Code]...
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