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dmesg命令-ghosts-51CTO博客
source link: http://blog.51cto.com/13559120/2070010
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dmesg命令被用于检查和控制内核的环形缓冲区。kernel会将开机信息存储在ringbuffer中。您若是开机时来不及查看信息，可利用dmesg来查看。开机信息保存在/var/log/dmesg文件里。语法dmesg(选项)选项-c：显示信息后，清除ringbuffer中的内容；-s<缓冲区大小>：预设置为8196，刚好等于ringbuffer的大小；-n：设置记录信息的层级。实例[
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