#!/bin/sh
xrandr --output $(xrandr | grep -E " connected (primary )?[1-9]+" | sed -e "s/\([A-Z0-9]\+\) connected.*/\1/") --brightness 1.0 --gamma 1.0:1.0:1.0

[Desktop Entry]
Type=Application
Version=1.0
Name=Desktop User Startup
Exec=/usr/local/bin/desktop-user-startup.sh
Terminal=false

mkdir ~/.config/xrstuff

#!/bin/sh

# Check if the third parameter is a non-negative number.
OK=`echo "$3" | grep -q "^[0-9]*[.][0-9]*$" && echo "0" || echo "1"`
OKI=`echo "$3" | grep -q "^[0-9]*$" && echo "0" || echo "1"`
if [ "$OK" = '1' ] && [ "$OKI" = '1' ];
then
	echo "Invalid value."
	exit 1
fi

# Getting the stored value and set it to 1.00 if nothing is stored.
CVAL=`cat "$HOME""/.config/xrstuff/""$1" 2> /dev/null`
if [ "$CVAL" = "" ]; then
	CVAL='1.00'
fi

case "${2}" in
	"+")
		CVAL=`echo "$CVAL""+""$3" | bc 2> /dev/null`
	;;

	"-")
		CVAL=`echo "$CVAL""-""$3" | bc 2> /dev/null`
	;;

	"=")
		CVAL=`echo "$3""+""0.00" | bc 2> /dev/null`
	;;

	*)
		echo "Invalid command."
		exit 1
	;;
esac

# Check if the result is a non-negative floating number.
OK=`echo "$CVAL" | grep -q "^[0-9]*[.][0-9]*$" && echo "0" || echo "1"`
if [ "$OK" = '1' ];
then
	echo "Invalid result."
	exit 1
fi

# Storing back the value.
echo "$CVAL" > "$HOME""/.config/xrstuff/""$1"

exit 0

chgxrval brightness = 5

chgxrval gamma + 0.2

#!/bin/sh
GAMMA=`cat "$HOME""/.config/xrstuff/gamma"`
xrandr --output $(xrandr | grep -E " connected (primary )?[1-9]+" | sed -e "s/\([A-Z0-9]\+\) connected.*/\1/") --brightness `cat "$HOME""/.config/xrstuff/brightness"` --gamma "$GAMMA"":""$GAMMA"":""$GAMMA"

chgxrval brightness = 5 && rsxrvals

chgxrval gamma + 0.2 && rsxrvals

[Desktop Entry]
Type=Application
Version=1.0
Name=Desktop User Startup
Exec=/usr/local/bin/rsxrvals
Terminal=false

@Ádám:
Hát én arra keltem, hogy dőlt be a víz az ablakon, mint az állat. Rá a nyomtatóra. De még működik :D

#!/bin/bash

xrandr --output HDMI-0 --brightness .9

@kemi:
Amúgy néztem a cront is, viszont azzal csak shell bejelentkezésre lehet ütemezni, GUI bejelentkezéskor nem fog lefutni.

@https://googleprojectzero.blogspot.com/2018/06/detecting-kernel-memory-disclosure.html:
As we learned during this study, the problem of leaking uninitialized kernel memory to user space is not caused merely by simple programming errors. Instead, it is deeply rooted in the nature of the C programming language, and has been around since the very early days of privilege separation in operating systems.

@TCH:
Kiváncsi vagyok, hogy a pestiek meddig tűrik még ezt a redbúl légiszart...

Windows kecske

@TCH:
BTW, az .xsession-os megoldás végül működött nálad?

#!/bin/sh

SPID=""
while [ "$SPID" = "" ];
do
	SPID=`pidof kicker`
	sleep 1
done
xrandr --output $(xrandr | grep -E " connected (primary )?[1-9]+" | sed -e "s/\([A-Z0-9]\+\) connected.*/\1/") --brightness 1.0 --gamma 1.0:1.0:1.0