#!/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 ~/.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" > ~/.config/xrstuff/$1

exit 0

chgxrval brightness = 5

chgxrval gamma + 0.2

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