Be careful on this last. We found that on certain distros, a reboot was
necessary (we tried the reload commands, but to no avail). I don't
remember now which distros were the problem (sorry).

-----Original Message-----
From: Tormod Volden [mailto:lists.tor...@gmail.com] 
Sent: Tuesday, October 30, 2012 2:44 PM
To: libusbx-devel@lists.sourceforge.net
Subject: Re: [Libusbx-devel] Example udev rules file

On Tue, Oct 30, 2012 at 7:25 PM, David Grant wrote:
> Could someone with write access to the libusbx wiki add this to the
> "Can I run Linux libusbx applications without root privilege?"
> section?
>
> Example udev rules file, call it "10-libusb.rules"
> SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", GROUP="libusbusers",
MODE="0664"

Or, for per-device configuration, example USB ID 0483:df11:
ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="0483",
ATTRS{idProduct}=="df11", MODE="664", GROUP="plugdev"

where the existing plugdev group is used (covers typical desktop users
on Debian/Ubuntu). I also filter for the "add" action, since this is
pointless on device removal.

> cp $SCRIPT_DIR/10-libusb.rules /etc/udev/rules.d/
> echo "In order for these changes to take effect you must restart your
computer"

No, rebooting is not necessary. The rules.d directory is usually
watched by udevd using inotify. In the worst case you must run "sudo
udevadm control --reload-rules".

Tormod

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