What command can be used to display kernel event messages in Linux?

The command used to display kernel event messages in Linux is dmesg. This command directly accesses the kernel ring buffer, which contains messages about the system's kernel and driver activities. When executed, dmesg outputs these messages, which can be very useful for diagnosing hardware issues, boot problems, or other system errors that are related to the kernel.

dmesg shows a chronological log of events, including system initialization messages, hardware detection results, and other kernel-related notifications. This command is essential for system administrators and users who need to troubleshoot or analyze system behavior at a low level.

In contrast, the other options do not fulfill this specific role in displaying kernel event messages. syslog is a general logging system that can manage and store logs from various sources, but it is not a command for directly accessing kernel messages. logd and kernelmsg aren't standard commands found in Linux for this purpose, and they may refer to various logging daemons or terminology not directly tied to the display of kernel event messages. Hence, dmesg stands out as the correct choice for viewing kernel-related information.