Annotation of src/usr.bin/kdump/kdump.1, Revision 1.3
1.3 ! ccappuc 1: .\" $OpenBSD: kdump.1,v 1.2 1996/06/26 05:34:43 deraadt Exp $
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35: .Dd June 6, 1993
36: .Dt KDUMP 1
37: .Os BSD 4.4
38: .Sh NAME
39: .Nm kdump
40: .Nd display kernel trace data
41: .Sh SYNOPSIS
42: .Nm kdump
43: .Op Fl dnlRT
44: .Op Fl e Ar emulation
45: .Op Fl f Ar file
46: .Op Fl m Ar maxdata
47: .Op Fl t Op cenis
48: .Sh DESCRIPTION
49: .Nm Kdump
50: displays the kernel trace files produced with
51: .Xr ktrace 1
52: in human readable format.
53: By default, the file
54: .Pa ktrace.out
55: in the current directory is displayed.
56: .Pp
57: The options are as follows:
58: .Bl -tag -width Fl
59: .It Fl d
60: Display all numbers in decimal.
61: .It Fl e Ar emulation
1.3 ! ccappuc 62: Interpret system call maps assuming the named emulation instead of "bsd".
1.1 deraadt 63: .It Fl f Ar file
64: Display the specified file instead of
65: .Pa ktrace.out .
66: .It Fl l
67: Loop reading the trace file, once the end-of-file is reached, waiting for
68: more data.
69: .It Fl m Ar maxdata
70: Display at most
71: .Ar maxdata
72: bytes when decoding
73: .Tn I/O .
74: .It Fl n
75: Suppress ad hoc translations.
76: Normally
77: .Nm kdump
78: tries to decode many system calls into a more human readable format.
79: For example,
80: .Xr ioctl 2
81: values are replaced with the macro name and
82: .Va errno
83: values are replaced with the
84: .Xr strerror 3
85: string.
86: Suppressing this feature yields a more consistent output format and is
87: easily amenable to further processing.
88: .It Fl R
89: Display relative timestamps (time since previous entry).
90: .It Fl T
91: Display absolute timestamps for each entry (seconds since epoch).
92: .It Fl t Ar cnis
93: See the
94: .Fl t
95: option of
96: .Xr ktrace 1 .
97: .El
98: .Sh SEE ALSO
99: .Xr ktrace 1
100: .Sh HISTORY
101: The
102: .Nm kdump
103: command appears in
104: .Bx 4.4 .