Linux Common Commands--DMESG

dmesg 系统启动异常诊断

Syntax format: DMESG "option" DMESG [options]
Note: There must be at least one space between each element in the DMESG command and in the following options
The DMESG is used to display the contents of the kernel ring buffer. During system boot, the kernel writes information about the hardware and module initialization to this buffer. The information in the kernel ring buffer is useful for diagnosing system problems.
The contents of the kernel ring buffer are also stored in the/var/log directory, which is the file named DMESG, which can be viewed by the following command:

Case one:
View Kernel ring Buffers

Linux Common Commands--DMESG