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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
                      4: .\"    The Regents of the University of California.  All rights reserved.
1.1       cgd         5: .\"
                      6: .\" Redistribution and use in source and binary forms, with or without
                      7: .\" modification, are permitted provided that the following conditions
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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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                     18: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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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 .