42 lines
1.4 KiB
Plaintext
42 lines
1.4 KiB
Plaintext
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Desc: Udev script for NUT USB drivers
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File: scripts/udev/README
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Date: 27 January 2008
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Auth: Arnaud Quette <aquette.dev@gmail.com>
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This document introduces the Linux udev script for NUT USB
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drivers (usbhid-ups, bcmxcp_usb, tripplite_usb, ...).
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These are needed on Linux systems running udev (recommended
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as of kernel 2.6.3, and mandatory as of 2.6.14 and higher).
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This script ensure that the right privileges are set on the
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usb devices files to allow the NUT driver to operate (ie
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allowing the nut user to read AND write to the UPS device).
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Note that the old style hotplug files, available in the
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scripts/hotplug directory, are not needed if your kernel supports
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udev.
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Installation
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------------
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For most users, these files will be automatically installed in
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/etc/udev (or /lib/udev) upon "make install", if that directory exists. You can
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specify an alternate directory with ./configure --with-udev-dir=DIR.
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Manual installation
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-------------------
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To install them manually, copy nut-usbups.rules to /etc/udev/rules.d
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(or /lib/udev/rules.d on newer systems) using the command
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$ cp -f nut-usbups.rules /etc/udev/rules.d/52-nut-usbups.rules
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You will need to refresh the bus to avoid a reboot for these rules to be
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active. You can do so using:
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$ udevadm trigger --subsystem-match=usb_device
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You can then plug your UPS USB cord, or unplug / replug it to
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refresh the device permission, and start NUT.
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