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@@ -5,3 +5,14 @@
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```sh
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pip3 install --user --upgrade acpi-backlight
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```
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+
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+## usage
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+
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+```sh
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+acpi-backlight-eval 1 # max brightness
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+acpi-backlight-eval 0.5 # 50% brightness
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+acpi-backlight-eval 1/4 # 25% brightness
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+acpi-backlight-eval 'b + 0.1'
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+acpi-backlight-eval 'b - 1/20'
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+acpi-backlight-eval 'b * 1.1'
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+```
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