Annotation of src/sbin/dmesg/dmesg.8, Revision 1.16
1.16 ! wiz 1: .\" $NetBSD: dmesg.8,v 1.15 2004/04/30 13:34:48 briggs Exp $
1.9 cgd 2: .\"
1.7 cgd 3: .\" Copyright (c) 1980, 1991, 1993
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1.1 cgd 5: .\"
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1.14 agc 14: .\" 3. Neither the name of the University nor the names of its contributors
1.1 cgd 15: .\" may be used to endorse or promote products derived from this software
16: .\" without specific prior written permission.
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1.7 cgd 30: .\" @(#)dmesg.8 8.1 (Berkeley) 6/5/93
1.2 cgd 31: .\"
1.16 ! wiz 32: .Dd April 30, 2004
1.1 cgd 33: .Dt DMESG 8
1.13 wiz 34: .Os
1.1 cgd 35: .Sh NAME
36: .Nm dmesg
37: .Nd "display the system message buffer"
38: .Sh SYNOPSIS
1.10 lukem 39: .Nm
1.1 cgd 40: .Op Fl M Ar core
41: .Op Fl N Ar system
42: .Sh DESCRIPTION
1.10 lukem 43: .Nm
1.1 cgd 44: displays the contents of the system message buffer.
45: .Pp
46: The options are as follows:
47: .Bl -tag -width Ds
48: .It Fl M
49: Extract values associated with the name list from the specified core
1.12 simonb 50: instead of the default ``/dev/mem''.
1.1 cgd 51: .It Fl N
52: Extract the name list from the specified system instead of the default
1.8 jtc 53: ``/netbsd''.
1.11 abs 54: .El
1.15 briggs 55: .Pp
56: The system message buffer is a circular buffer of a fixed size.
57: If the buffer has been filled, the first line of the
58: .Nm
59: output may not be complete.
60: The size of the message buffer is configurable at compile-time on
61: most systems with the
1.16 ! wiz 62: .Dv MSGBUFSIZE
1.15 briggs 63: kernel option.
64: Look for
1.16 ! wiz 65: .Dv MSGBUFSIZE
1.15 briggs 66: in
67: .Xr options 4
68: for details.
1.11 abs 69: .Sh FILES
70: .Bl -tag -width /var/run/dmesg.boot -compact
71: .It Pa /var/run/dmesg.boot
72: copy of dmesg at the time of last boot.
1.1 cgd 73: .El
74: .Sh SEE ALSO
1.16 ! wiz 75: .Xr options 4 ,
1.1 cgd 76: .Xr syslogd 8
77: .Sh HISTORY
78: The
79: .Nm
80: command appeared in
81: .Bx 4.0 .
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