This file is indexed.

/usr/lib/cups/backend/roger-cups is in roger-router-cli 1.8.14-2+b3.

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

if [ $# -eq 0 ] ; then
	# Device Discovery
	echo "file roger-cups:/ \"Unknown\" \"Tabos.org Roger Router Fax Printer\""
	exit 0 # CUPS_BACKEND_OK
fi

RNAME="$2-Fax-ID$1"
SPOOL_DIR="/var/spool/roger"

if [ $# -eq 6 ]; then
	cp "$6" "$SPOOL_DIR/$RNAME.tmp" || exit 1 # CUPS_BACKEND_FAILED
else
	cat > "$SPOOL_DIR/$RNAME.tmp" || exit 1 # CUPS_BACKEND_FAILED
fi

chmod 660 "$SPOOL_DIR/$RNAME.tmp"
mv "$SPOOL_DIR/$RNAME.tmp" "$SPOOL_DIR/$RNAME"

exit 0 # CUPS_BACKEND_OK