dmesg -n 4

命令"dmesg -n 4"用于设置记录信息的层级为4，即只显示警告级别的信息。 这个命令将会过滤掉除了警告级别及以上的信息，只显示开机过程中的警告信息。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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