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+.\" Copyright (c) 1983, 1990, 1992, 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.
+.\"
+.\"	@(#)gcore.1	8.2 (Berkeley) 4/18/94
+.\"
+.Dd "April 18, 1994"
+.Dt GCORE 1
+.Os BSD 4.2
+.Sh NAME
+.Nm gcore
+.Nd get core images of running process
+.Sh SYNOPSIS
+.Nm gcore
+.Op Fl s
+.Op Fl c Ar core
+.Ar exec pid
+.Sh DESCRIPTION
+.Nm Gcore
+creates a core image of the specified process,
+suitable for use with
+.Xr gdb  1 .
+By default, the core is written to the file
+.Dq Pa core.<pid> .
+Both the executable image,
+.Ar exec ,
+and the process identifier,
+.Ar pid ,
+must be given on the command line.
+.Pp
+The options are:
+.Bl -tag -width indent
+.It Fl c
+Write the core file to the specified file instead of
+.Dq Pa core.<pid> .
+.It Fl s
+Stop the process while gathering the core image, and resume it
+when done.  This guarantees that the resulting core dump will
+be in a consistent state.  The process is resumed even if it was
+already stopped.
+The same effect can be achieved manually with 
+.Xr kill 1 .
+.El
+.Sh FILES
+.Bl -tag -width /var/log/messages -compact
+.It Pa core.<pid>
+The core image.
+.EL
+.Dp
+.Sh HISTORY
+.Nm Gcore
+appeared in 4.2BSD.
+.Sh BUGS
+Context switches or paging activity that occur while
+.Nm gcore
+is running may cause the program to become confused.
+For best results, use -s to temporarily stop the target process.
+.Pp
+.Nm Gcore
+is not compatible with the original 4.2BSD version.
+In particular, 4.4BSD requires the 
+.Ar exec
+argument.