kdump man page on OpenDarwin

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KDUMP(1)		  BSD General Commands Manual		      KDUMP(1)

NAME
     kdump — display kernel trace data

SYNOPSIS
     kdump [-dnlRT] [-f file] [-m maxdata] [-t [cnisuw]]

DESCRIPTION
     The kdump command displays the kernel trace files produced with ktrace(1)
     in human readable format.	By default, the file ktrace.out in the current
     directory is displayed.

     The options are as follows:

     -d		 Display all numbers in decimal.

     -f file	 Display the specified file instead of ktrace.out.

     -l		 Loop reading the trace file, once the end-of-file is reached,
		 waiting for more data.

     -m maxdata	 Display at most maxdata bytes when decoding I/O.

     -n		 Suppress ad hoc translations.	Normally kdump tries to decode
		 many system calls into a more human readable format.  For
		 example, ioctl(2) values are replaced with the macro name and
		 errno values are replaced with the strerror(3) string.	 Sup‐
		 pressing this feature yields a more consistent output format
		 and is easily amenable to further processing.

     -R		 Display relative timestamps (time since previous entry).

     -T		 Display absolute timestamps for each entry (seconds since
		 epoch).

     -t cnisuw	 See the -t option of ktrace(1).

SEE ALSO
     ktrace(1)

HISTORY
     The kdump command appeared in 4.4BSD.

BSD				 June 6, 1993				   BSD
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