1.\" Copyright (c) 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)kdump.1 5.4 (Berkeley) 7/26/91 33.\" 34.Dd July 26, 1991 35.Dt KDUMP 1 36.Os 37.Sh NAME 38.Nm kdump 39.Nd display kernel trace data 40.Sh SYNOPSIS 41.Nm kdump 42.Op Fl dnlRT 43.Op Fl f Ar file 44.Op Fl m Ar maxdata 45.Op Fl t Op cnis 46.Sh DESCRIPTION 47.Nm Kdump 48displays the kernel trace files produced with 49.Xr ktrace 1 50in human readable format. 51By default, the file 52.Pa ktrace.out 53in the current directory is displayed. 54.Pp 55The options are as follows: 56.Bl -tag -width Fl 57.It Fl d 58Display all numbers in decimal. 59.It Fl f Ar file 60Display the specified file instead of 61.Pa ktrace.out . 62.It Fl l 63Loop reading the trace file, once the end-of-file is reached, waiting for 64more data. 65.It Fl m Ar maxdata 66Display at most 67.Ar maxdata 68bytes when decoding 69.Tn I/O . 70.It Fl n 71Suppress ad hoc translations. 72Normally 73.Nm kdump 74tries to decode many system calls into a more human readable format. 75For example, 76.Xr ioctl 2 77values are replaced with the macro name and 78.Va errno 79values are replaced with the 80.Xr strerror 3 81string. 82Suppressing this feature yields a more consistent output format and is 83easily amenable to further processing. 84.It Fl R 85Display relative timestamps (time since previous entry). 86.It Fl T 87Display absolute timestamps for each entry (seconds since epoch). 88.It Fl t Ar cnis 89See the 90.Fl t 91option of 92.Xr ktrace 1 . 93.El 94.Sh SEE ALSO 95.Xr ktrace 1 96.Sh HISTORY 97The 98.Nm kdump 99command is 100.Ud . 101