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# brightness
> 获取或设置所有显示设备的亮度等级。
> 更多信息：<https://github.com/nriley/brightness>.
- 显示当前亮度：
`brightness -l`
- 设置亮度到 100%:：
`brightness {{1}}`
- 设置亮度到 50%:：
`brightness {{0.5}}`