What is true about the dmesg command?
A) It traces the execution of a command and shows each step the program carries out.
B) It sends messages to the command lines of all current user sessions.
C) It displays the content of the Linux kernel's ring buffer.
D) It immediately outputs all new messages written to the system journal.
E) It might not display older information because it was overwritten by newer information.

Question

Quizplus · Accepted Answer

The `dmesg` command displays the content of the Linux kernel's ring buffer, which contains messages related to the system's hardware and boot process. Since the ring buffer has a fixed size, older messages may be overwritten by newer ones, which is why `dmesg` might not display older information.

What Is True About the Dmesg Command