This file is indexed.

/lib/udev/openct_usb is in openct 0.6.20-1.2ubuntu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh

# maybe udev passes the device name to us.
if [ -n "$1" ]; then
	DEVNAME="$1"
fi

[ -n "$DEVPATH" ] || exit 0
[ "$ACTION" = "add" ] || exit 0
[ -e "/var/run/openct/status" ] || exit 0

# try to get the device node from the parent device
if [ -z "$DEVNAME" ]; then
	#
	# Guess udev info interface.
	# Newer udev uses udevadm
	#
	if which udevinfo > /dev/null 2>&1; then
		UDEVINFO="udevinfo"
	else
		UDEVINFO="udevadm info"
	fi
	DEVNAME=/dev/$($UDEVINFO --query=name --path=$(dirname $DEVPATH))
fi

# if udev supplied a device node directly from the usb-device, we use it,
# because it is guaranteed to exist at the time we run
if [ -n "$DEVNAME" -a -e "$DEVNAME" ]; then
	DEVICE="$DEVNAME"
fi

[ -n "$DEVICE" ] || exit 0

if [ -z "$PRODUCT" -a -n "$MODALIAS" ]; then
	PRODUCT=$(echo $MODALIAS | sed -e 's/usb:v\(....\)p\(....\)d\(....\).*/\1\/\2\/\3/g' |tr A-F a-f)
fi

if [ -z "$PRODUCT" ]; then
	V=$(cat /sys$(dirname $DEVPATH)/idVendor | sed -e 's/^0*//')
	P=$(cat /sys$(dirname $DEVPATH)/idProduct | sed -e 's/^0*//')
	D=$(cat /sys$(dirname $DEVPATH)/bcdDevice | sed -e 's/^0*//')
	PRODUCT="$V/$P/$D"
fi

[ -n "$PRODUCT" ] || exit 0

# we may neeed to wait for the device node, when usbfs is used
for A in "0 1 2 3 4 5 6 7 8 9"; do
	if [ -e "$DEVICE" ]; then
		/usr/sbin/openct-control attach usb:$PRODUCT usb $DEVICE
		exit 0
	fi
	sleep 0.1
done

echo "$0 waited for $DEVICE but it did not appear." | logger -p daemon.error
exit 0