mirror of
https://github.com/SinTan1729/random.git
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51 lines
No EOL
1.8 KiB
Bash
51 lines
No EOL
1.8 KiB
Bash
#!/bin/sh
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# This is a script to set my external monitor's brightness
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# to high (70%) or low (40%) automatically according to day/night.
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# It uses ddcutil to access the monitor's settings and sunwait to know
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# if it's day or night. It expects a file in the following format in
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# the .config directory (the values should be according to location)
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# ~/.config/latlong.toml
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# latitude="0.000000N"
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# longitude="0.000000E"
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# Add the following to crontab to make it run automatically and properly
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# @reboot <location-of-this-script> && <location-of-this-script> crontab
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# 0 0,12 * * * <location-of-this-script> crontab
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confdir="/home/sintan/.config"
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if test -f $confdir/latlong.toml ; then
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source $confdir/latlong.toml
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else
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echo "No location config found!"
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exit
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fi
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# Check if called by crontab as routine. If yes, start waiting,
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# otherwise adjust brightness immediately
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if [ "$1" == "crontab" ]; then
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if test -f /tmp/brightness-crontab; then
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exit
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else
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if [ $(sunwait poll $latitude $longitude) == "DAY" ]; then
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echo "Waiting for sunset at" $(sunwait report 35.221050N 97.445938W | grep "Daylight:" | awk '{print $6}') > /tmp/brightness-crontab
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sunwait wait set offset 10 $latitude $longitude && ddcutil setvcp 10 40
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else
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echo "Waiting for sunrise at" $(sunwait report 35.221050N 97.445938W | grep "Daylight:" | awk '{print $4}') > /tmp/brightness-crontab
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sunwait wait rise offset 10 $latitude $longitude && ddcutil setvcp 10 70
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fi
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rm /tmp/brightness-crontab
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fi
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else
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if [ $(sunwait poll $latitude $longitude) == "DAY" ]; then
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ddcutil setvcp 10 70
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echo "Monitor brightness set to 70%, since it's day time."
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else
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ddcutil setvcp 10 40
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echo "Monitor brightness set to 40%, since it's night time."
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fi
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fi |