View system startup kernel detection hardware information dmesg

View system startup kernel detection hardware information dmesg

Dmesg is used to display the boot information. The kernel stores the boot information in the ring buffer. You can use dmesg to view the information if you cannot view it at startup. The boot information is also saved in the/var/log directory and named dmesg. Dmesg is used to detect and control the kernel ring buffer. Programs are used to help users understand system startup information.

Dmesg check Nic startup status

Parameters:
-C: After the information is displayed, clear the content in the ring buffer.
-S <buffer size> is set to 8196, which is equal to the ring buffer size.
-N: set the record information level.