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I have a footpedal and fortunately there is a software for using it under linux (see http://code.google.com/p/footpedal/). The author of that software already solved an issue for me (see issues there), but there is no option to ask simpler questions.

Unfortunately prior to use the software I have to change the device permission each time I start linux. How could I change that to be done automatically at startup?

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migrated from stackoverflow.com Oct 22 '10 at 12:52

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That depends on your distribution. Which one are you using? –  Frédéric Hamidi Oct 22 '10 at 12:39

4 Answers 4

Create a new file under /etc/udev/rules.d that contains an appropriate udev rule for setting the permissions on the device.

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That is the real answer to the real question. –  Louis Oct 23 '10 at 8:26

Historicaly there is a /etc/rc.local which is execute at the end of all other init scripts. To put your script in rc5.d and rc3.d you need a script that will run with start as parameter.

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This is the easiest best solution. +1 –  SuperJames Oct 22 '10 at 14:12
    
Technically, ir you're running from /etc/rc.*, you don't even need sudo, you're already root. You could remove it from the command –  Rich Homolka Oct 22 '10 at 14:23

Normally, that would be a script under the /etc/rc* hierarchy. The scripts under (for example) /etc/rc5.d (from memory) are for run level 3 which is the level most systems end up in.

You should look into init since this is the program that runs all those scripts. There's a useful article here.

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On Linux, you probably have Vixie cron, which can run things on system reboot. You can run sudo things here if you have the sudo entry marked as NOPASSWD

Run: crontab -e And it will open your crontab file in your editor (as set by EDITOR variable) and add the line

@reboot    sudo chmod a+r /dev/usb/hiddev0

and save it. If you have a chance i'd reboot just to test it.

crontab -e will probably run in vi, if you don't know how to run vi, maybe try kate or gedit

EDITOR=kate crontab -e

or

EDITOR=gedit crontab -e
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