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bweigel/set_display_brightness.sh

Last active January 4, 2018 19:15
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[LINUX] Change display brightness of all connected screens
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set_display_brightness.sh
#!/bin/bash
BRIGHTNESS=$1
if [[ $(echo "${BRIGHTNESS} >= 0.2 && ${BRIGHTNESS} <= 1" | bc) = 1 ]]; then
for disp in $(xrandr | awk '{print $1,$2}' | grep -P '(?<!dis)connected' | awk '{print $1}'); do
echo "Setting brightness in display ${disp} to ${BRIGHTNESS}..."
xrandr --output $disp --brightness ${BRIGHTNESS}
done
else
echo "A brightness of ${BRIGHTNESS} may be not such a good idea..."
fi
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