Which command can be used to view the Linux boot messages?

Which command can be used to view the Linux boot messages?

• A. dmesg
• B. ls
• C. ps
• D. top

Answer: (A)

Viewing Linux boot messages involves reading the kernel’s message buffer, which records events from the early boot sequence and hardware initialization. The command that prints that buffer is dmesg. It shows kernel and driver messages, including hardware detection, driver probes, and initialization steps, which is exactly what boot logs consist of. The other commands don’t access those logs: ls lists files and directories, not system messages; ps shows currently running processes; top provides real-time process activity. On some systems you can also use journaling tools like journalctl to view kernel logs, but the direct and traditional way to view boot messages is dmesg.

Viewing Linux boot messages involves reading the kernel’s message buffer, which records events from the early boot sequence and hardware initialization. The command that prints that buffer is dmesg. It shows kernel and driver messages, including hardware detection, driver probes, and initialization steps, which is exactly what boot logs consist of. The other commands don’t access those logs: ls lists files and directories, not system messages; ps shows currently running processes; top provides real-time process activity. On some systems you can also use journaling tools like journalctl to view kernel logs, but the direct and traditional way to view boot messages is dmesg.