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Linux in a Nutshell, 6th Edition by Robert Love, Stephen Figgins, Ellen Siever, Arnold Robbins

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Name

dmesg

Synopsis

dmesg [options]

System administration command. Display the system control messages from the kernel ring buffer. This buffer stores all messages since the last system boot, or the most recent ones if the buffer has been filled.

Options

-c

Clear buffer after printing messages.

-nlevel

Set the level of system message that will display on console.

-sbuffersize

Specify buffersize of kernel ring buffer. This is useful if you have changed the kernel default.

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