Util scripts

asus-kbd-backlight.service

# /usr/lib/systemd/system/asus-kbd-backlight.service
[Unit]
Description=Asus Keyboard Backlight
Wants=systemd-backlight@leds:asus::kbd_backlight.service
After=systemd-backlight@leds:asus::kbd_backlight.service

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/bin/chown root:backlight /sys/class/leds/asus::kbd_backlight/brightness
ExecStartPost=/bin/chmod g+rw /sys/class/leds/asus::kbd_backlight/brightness

[Install]
WantedBy=multi-user.target

backlight.sh

#!/bin/sh
# Usage: backlight.sh [-inc / -dec] N
# If you use the .service files provided with this gist, your user should be in group `backlight`.
# Else, add a `sudo` before the `tee` and add a file in /etc/sudoers.d with:
# 	#user host = (root) NOPASSWD: /bin/tee

BASEDIR="/sys/class/backlight/intel_backlight"

CUR_BRIGHTNESS=`cat "$BASEDIR/brightness"`
MAX_BRIGHTNESS=`cat "$BASEDIR/max_brightness"`

if [ $# -ne 2 ]; then
	echo "Usage: $0 [-inc / -dec] N" >&2
	exit 1
fi

CHANGE=$2

if ! echo $CHANGE | egrep -q '^[0-9]+$'; then
	echo "N is not a number!" >&2
	exit 2
fi

case $1 in
"-inc")
	NEW_BRIGHTNESS=$((CUR_BRIGHTNESS + MAX_BRIGHTNESS / 100 * CHANGE))
	if ((NEW_BRIGHTNESS > MAX_BRIGHTNESS)); then
		NEW_BRIGHTNESS=$MAX_BRIGHTNESS
	fi
	;;
"-dec")
	NEW_BRIGHTNESS=$((CUR_BRIGHTNESS - MAX_BRIGHTNESS / 100 * CHANGE))
	if ((NEW_BRIGHTNESS < 0)); then
		NEW_BRIGHTNESS=0
	fi
	;;
*)
	echo "Invalid option: $1"
	exit 3
	;;
esac

echo $NEW_BRIGHTNESS | tee "$BASEDIR/brightness"

hdmi_sound_toggle.sh

#!/bin/bash
USER_NAME=$(whoami)
USER_ID=$(id -u "$USER_NAME")
HDMI_STATUS=$(</sys/class/drm/card0/*HDMI*/status)

export PULSE_SERVER="unix:/run/user/"$USER_ID"/pulse/native"

if [[ $HDMI_STATUS == connected ]]
then
   sudo -u "$USER_NAME" pactl --server "$PULSE_SERVER" set-card-profile 0 output:hdmi-stereo+input:analog-stereo
else
   sudo -u "$USER_NAME" pactl --server "$PULSE_SERVER" set-card-profile 0 output:analog-stereo+input:analog-stereo
fi

intel_backlight.service

# /usr/lib/systemd/system/intel-backlight.service
[Unit]
Description=Intel Backlight
Wants=systemd-backlight@intel_backlight.service
After=systemd-backlight@intel_backlight.service

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/bin/chown root:backlight /sys/class/backlight/intel_backlight/brightness 
ExecStartPost=/bin/chmod g+rw /sys/class/backlight/intel_backlight/brightness

[Install]
WantedBy=multi-user.target

kbacklight.sh

#!/bin/sh
# Usage: kbacklight.sh <inc|dec>

BASEDIR="/sys/class/leds/asus::kbd_backlight"

CUR_BRIGHTNESS=`cat "$BASEDIR/brightness"`
MAX_BRIGHTNESS=`cat "$BASEDIR/max_brightness"`

if [ $# -ne 1 ]; then
	echo "Usage: $0 <inc|dec>" >&2
	exit 1
fi

CHANGE=$1

case $CHANGE in
inc)
	NEW_BRIGHTNESS=$((CUR_BRIGHTNESS + 1))
	if ((NEW_BRIGHTNESS > MAX_BRIGHTNESS)); then
		NEW_BRIGHTNESS=$MAX_BRIGHTNESS
	fi
	;;
dec)
	NEW_BRIGHTNESS=$((CUR_BRIGHTNESS - 1))
	if ((NEW_BRIGHTNESS < 0)); then
		NEW_BRIGHTNESS=0
	fi
	;;
*)
	echo "Invalid option: $1"
	exit 3
	;;
esac

echo $NEW_BRIGHTNESS | tee "$BASEDIR/brightness"

swaplang.sh

#!/bin/bash

[[ $(setxkbmap -query | grep layout | grep us) ]] && setxkbmap it || setxkbmap us
xmodmap ~/.xmodmaprc

wificonnect.sh

#!/bin/bash

usage() {
	>&2 echo "Usage: $0 [-l] [ap]"
	>&2 echo "    -l: scan for available AP and list them"
	exit 1
}

ssid_to_id() {
	wpa_cli list_networks | grep "$1" | cut -f1
}

connect_known() {
	local ap_id=$1
	wpa_cli select_network $ap_id
}

connect_unknown() {
	local ap_ssid="$1"
	wpa_cli scan
	echo Scanning...
	sleep 3
	(wpa_cli scan_results | grep "$ap_ssid") || {
		>&2 echo "AP $ap_ssid not found."
		exit 2
	}
	read -p "Psk> " -s psk
	local new_id=$(wpa_cli add_network)
	wpa_cli set_network $new_id ssid "$ap_ssid"
	wpa_cli set_network $new_id psk "$psk"
	wpa_cli select_network $new_id
}

list_networks() {
	wpa_cli scan
	>&2 echo Scanning...
	sleep 3
	>&2 echo Scan results:
	>&2 echo -------------
	>&2 echo "SSID (dB)"
	wpa_cli scan_results | tail -n +3 | awk '
		{
			for(i = 5; i <= NF; ++i)
				printf $(i) " "
			print "(" $3 ")"
		}'
}

connect_interactive() {
	list_networks
	read -p "Insert SSID: " ssid
	connect_known $(ssid_to_id "$ssid")
}

if [[ $1 =~ -.* ]]; then
	case $1 in
	-l|--list)
		list_networks
		exit 0
		;;
	-*)
		usage
	esac
elif [[ $# < 1 ]]; then
	connect_interactive
	exit $?
fi

N=$(ssid_to_id "$1")
[[ $N ]] && connect_known $N || connect_unknown "$*"