Linux Command: dmesg

 

When you miss the boot information, you cannot see many changes, especially when debugging embedded development boards, dmesg is very useful.

 

Function Description: displays the boot information.
Syntax: dmesg [-cn] [-S <buffer size>]
Note: 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.
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.