.\"	$OpenBSD: dmesg.8,v 1.14 2013/08/14 06:32:35 jmc Exp $
.\"	$NetBSD: dmesg.8,v 1.9 1995/03/18 14:54:47 cgd Exp $
.\"
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.\"     @(#)dmesg.8	8.1 (Berkeley) 6/5/93
.\"
.Dd $Mdocdate: August 14 2013 $
.Dt DMESG 8
.Os
.Sh NAME
.Nm dmesg
.Nd display the system message buffer
.Sh SYNOPSIS
.Nm dmesg
.Op Fl M Ar core
.Op Fl N Ar system
.Sh DESCRIPTION
.Nm
displays the contents of the system message buffer.
It is most commonly used to review system startup messages.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl M Ar core
Extract values associated with the name list from the specified
.Ar core
instead of the default
.Pa /dev/kmem .
.It Fl N Ar system
Extract the name list from the specified
.Ar system
instead of the default
.Pa /bsd .
.El
.Sh FILES
.Bl -tag -width /var/run/dmesg.boot -compact
.It Pa /var/run/dmesg.boot
copy of
.Nm
saved by
.Xr rc 8
at boot time
.El
.Sh SEE ALSO
.Xr syslogd 8
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.0 .