dmesg Command - Print or Control the Kernel Ring Buffer

The dmesg command is used to examine or control the kernel ring buffer. It displays messages from the kernel, including hardware, driver, and boot information.

Syntax

dmesg [options]

Examples

dmesg | less

dmesg -T

Notes

• Requires root privileges for some options.
• Useful for troubleshooting hardware and driver issues.
• For persistent logs, use journalctl on systemd systems.