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DMESG(8)		FreeBSD	System Manager's Manual		      DMESG(8)

NAME
     dmesg -- display the system message buffer

SYNOPSIS
     dmesg [-a]	[-M core] [-N system]

DESCRIPTION
     The dmesg utility displays	the contents of	the system message buffer.  If
     neither the -N nor	the -M option is specified, the	buffer is read from
     the currently running kernel via the sysctl(3) interface.	Otherwise, the
     buffer is read from the specified core file (or from the default one),
     using the name list from the specified kernel image (or from the default
     image).

     The options are as	follows:

     -a	     Show all data in the message buffer.  This	includes any syslog
	     records and /dev/console output.

     -M	     Extract values associated with the	name list from the specified
	     core instead of the default /dev/kmem.

     -N	     Extract the name list from	the specified system instead of	the
	     default, which is the kernel image	the system has booted from.

FILES
     /var/run/dmesg.boot  usually a snapshot of	the buffer contents taken soon
			  after	file systems are mounted at startup time

SEE ALSO
     sysctl(3),	syslogd(8)

HISTORY
     The dmesg utility appeared	in 4.0BSD.

FreeBSD	9.3			 June 5, 1993			   FreeBSD 9.3

NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | HISTORY

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