dmesg is used to examine or control the kernel ring buffer. The program helps users to print out their bootup messages. Instead of copying the messages by hand, the user need only: dmesg boot.messages and mail the boot.messages file to whoever can debug their problem. [from the man page] Keyword(s): hardware management, new hardware

Print or control the kernel ring buffer.

Unix-like operating systems that prints the message buffer of the kernel. This buffer contains a variety of important messages from those printed during boot to those used for debugging software. This information may also be stored to disk via a logging daemon, such as syslog.