This file is indexed.

/lib/udev/rules.d/56-hpmud.rules is in hplip 3.14.3-0ubuntu3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# HPLIP udev rules file. Notify console user if plugin support is required for this device.

ACTION!="add", GOTO="hpmud_rules_end"
SUBSYSTEM=="ppdev", OWNER="root", GROUP="lp", MODE="0664"
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", GOTO="hpmud_usb_rules"


LABEL="hpmud_usb_rules"

# ENV{ID_HPLIP}="1" is for Ubuntu udev-acl
ATTR{idVendor}=="03f0", ATTR{idProduct}=="????", OWNER="root", GROUP="lp", MODE="0664", ENV{sane_hpaio}="yes", ENV{libsane_matched}="yes", ENV{hp_test}="yes", ENV{ID_HPLIP}="1"


# This rule will add the printer and install plugin
ENV{hp_test}=="yes", PROGRAM="/bin/sh -c 'logger -p user.info loading HP Device $env{BUSNUM} $env{DEVNUM}'", RUN+="/bin/sh -c 'if [ -f /usr/bin/systemctl ]; then /usr/bin/systemctl --no-block start hplip-printer@$env{BUSNUM}:$env{DEVNUM}.service; else /usr/bin/nohup /usr/bin/python /usr/bin/hp-config_usb_printer $env{BUSNUM}:$env{DEVNUM} ; fi &'"

# If sane-bankends is installed add hpaio backend support to dll.conf if needed.
ENV{sane_hpaio}=="yes", RUN+="/bin/sh -c 'grep -q ^#hpaio /etc/sane.d/dll.conf;if [ $$? -eq 0 ];then sed -i -e s/^#hpaio/hpaio/ /etc/sane.d/dll.conf;else grep -q ^hpaio /etc/sane.d/dll.conf;if [ $$? -ne 0 ];then echo hpaio >>/etc/sane.d/dll.conf;fi;fi'"

# The following rule will disable USB autosuspend for the device
ENV{libsane_matched}=="yes", RUN+="/bin/sh -c 'test -e /sys/$env{DEVPATH}/power/level && echo on > /sys/$env{DEVPATH}/power/level'"


LABEL="hpmud_rules_end"