/etc/sane.d/coolscan2.conf is in libsane 1.0.23-3ubuntu3.
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 11 12 13 14 15 16 17 18 19 20 | # coolscan2.conf: sample configuration file for coolscan2 backend
#
# The following entrie checks for your scanner by manufacturer (SCSI)
# and by vendor and product ID (USB). This is what the backend does when
# no configuration file can be found.
#
auto
# You can also configure the backend for specific device files, but this
# should not normally be necessary (under Linux at least).
# Syntax for specific devices: <interface>:<device>
#
# For a SCSI scanner, uncomment and edit the following line:
#scsi:/dev/scanner
#
# For a USB scanner, uncomment and edit the following line:
#usb:/dev/usbscanner
#
# For an IEEE 1394 scanner, use the SBP2 protocol (under Linux, use the
# sbp2 kernel module), and your scanner will be handled as a SCSI device.
|