tldr/pages.zh/osx/brightness.md

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# brightness
> 获取或设置所有显示设备的亮度等级。
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- 显示当前亮度:
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`brightness -l`
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- 设置亮度到 100%:
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`brightness {{1}}`
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- 设置亮度到 50%:
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`brightness {{0.5}}`