Find Asus hotkeys device and print the device path

findasushotkeys

#!/bin/sh -e
# Find Asus hotkeys device and print the device path
# Author: Joao Felipe Nicolaci Pimentel <joaofelipenp@gmail.com>
#
# Copyright (C) 2013
#
# Based on findkeyboards
# Original Author: Martin Pitt <martin.pitt@ubuntu.com>
#
# Copyright (C) 2009, Canonical Ltd.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.

# returns OK if $1 contains $2
strstr() {
        [ "${1#*$2*}" != "$1" ]
}

# returns OK if $1 contains $2 at the beginning
str_starts() {
        [ "${1#$2*}" != "$1" ]
}

str_line_starts() {
        while read a; do str_starts "$a" "$1" && return 0;done
        return 1;
}

# print a list of input devices which are keyboard-like
keyboard_devices() {
        # standard AT keyboard
        for dev in `udevadm trigger --dry-run --verbose --property-match=ID_PATH=platform-asus-nb-wmi`; do
                walk=`udevadm info --attribute-walk --path=$dev`
                env=`udevadm info --query=env --path=$dev`
                # filter out non-event devices, such as the parent input devices which have no devnode
                
		if ! echo "$env" | str_line_starts 'DEVNAME='; then
                        continue
                fi
		echo -n 'ASUS hotkeys: '
                udevadm info --query=name --path=$dev
        done

}

keyboard_devices