nircmd 的作用就是通过命令行控制 windows 的很多设置。如果你想要命令行控制一些系统设置，可以来这找找看。

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nircmd-windows 的官网： https://www.nirsoft.net/utils/nircmd.html

静音的代码非常简单： nircmd.exe mutesysvolume 1

我们可以做一个 bat 的批处理命令 静音 .bat  输入： F:\soft\nircmd\nircmd.exe mutesysvolume 1

然后通过计划任务设置为每天晚上 10 点 30 分运行，就完美啦。

计划任务的入口在： 资源管理器》我的电脑，右键》管理

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