/lib/udev/rules.d/85-tlp.rules is in tlp 0.9-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | # tlp - udev rules
#
# Copyright (c) 2016 Thomas Koch <linrunner at gmx.net>
# This software is licensed under the GPL v2 or later.
# handle change of power source ac/bat
ACTION=="change", SUBSYSTEM=="power_supply", RUN+="/usr/sbin/tlp auto"
# handle added usb devices (exclude subdevices via DRIVER=="USB")
ACTION=="add", SUBSYSTEM=="usb", DRIVER=="usb", ENV{DEVTYPE}=="usb_device", RUN+="/lib/udev/tlp-usb-udev %p"
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