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+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)tftpd.8	8.1 (Berkeley) 6/4/93
+.\" $FreeBSD: src/libexec/tftpd/tftpd.8,v 1.15 2001/07/15 07:53:42 dd Exp $
+.\"
+.Dd June 10, 2020
+.Dt KDUMPD 8
+.Os
+.Sh NAME
+.Nm kdumpd
+.Nd Mac OS X remote kernel core dump server
+.Sh SYNOPSIS
+.Nm /usr/libexec/kdumpd
+.Op Ar directory
+.Sh DESCRIPTION
+.Nm Kdumpd
+is a server which receives
+kernel states in the form of
+a core dump from a remote 
+Mac OS X machine.
+The
+.Tn kdumpd
+server operates
+on UDP port 1069, although this
+may be configurable in the future.
+The server should be started by
+.Xr launchctl 1 .
+.Pp
+The server should have the user ID
+with the lowest possible privilege,
+usually the user "nobody". 
+.Pp
+By default the server stores kernel cores
+in the directory
+.Pa /var/tmp/PanicDumps .
+The directory needs to already exist for kdumpd
+to save core dumps.
+.Pp
+The server returns an EEXIST error
+to the remote kernel if it receives a
+request for an existing file - i.e.
+only new files can be created. The server
+also disallows path specifications in the
+incoming file name. 
+.Sh HISTORY
+The
+.Nm
+command is based on Berkeley
+.Xr tftpd 8 ,
+by way of FreeBSD, with several modifications.
+.Sh SEE ALSO
+.Xr launchd 8 ,
+.Xr launchctl 1 ,
+.Xr launchd.plist 5