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21 lines
359 B
21 lines
359 B
#!/bin/bash |
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set -x |
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if xbacklight -get; then |
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if [[ "$1" == "up" ]]; then |
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xbacklight -inc 20 |
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else |
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xbacklight -dec 20 |
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fi |
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else |
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val=$(cat /sys/class/backlight/*/brightness | head -1) |
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if [[ "$1" == "up" ]]; then |
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val=$((val+20)) |
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else |
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val=$((val-20)) |
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fi |
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for bk in /sys/class/backlight/*; do |
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echo $val > $bk/brightness |
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done |
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fi |
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