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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
     the -M option is not 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,	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.

     -N	     If	-M is also specified, extract the name list from the specified
	     system instead of the default, which is the kernel	image the sys-
	     tem 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	10.1			 June 5, 1993			  FreeBSD 10.1

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

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