Linux Essentials (010-160) — Question 1

What is true about the dmesg command? (Choose two.)

Answer options

• 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.

Correct answer: C, E

Explanation

The correct answer includes C and E because the dmesg command indeed displays the contents of the Linux kernel's ring buffer and older messages can be overwritten by newer ones. Options A, B, and D are incorrect as they describe functionalities that are not associated with the dmesg command.