1 .\" Copyright (c) 1983, 1990, 1992, 1993
2 .\" The Regents of the University of California. All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
13 .\" may be used to endorse or promote products derived from this software
14 .\" without specific prior written permission.
16 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 .\" @(#)gcore.1 8.2 (Berkeley) 4/18/94
29 .\" $FreeBSD: src/usr.bin/gcore/gcore.1,v 1.8.2.5 2002/07/15 06:25:27 keramida Exp $
36 .Nd get core images of running process
46 utility creates a core image of the specified process,
49 By default, the core is written to the file
51 The process identifier,
53 must be given on the command line.
54 If no executable image is
58 .Dq Pa /proc/<pid>/file .
60 The following options are available:
61 .Bl -tag -width indent
63 Write the core file to the specified file instead of
66 Stop the process while gathering the core image, and resume it
67 when done. This guarantees that the resulting core dump will
68 be in a consistent state. The process is resumed even if it was
70 The same effect can be achieved manually with
74 .Bl -tag -width /var/log/messages -compact
77 .It Pa /proc/<pid>/file
86 Context switches or paging activity that occur while
88 is running may cause the program to become confused.
91 to temporarily stop the target process.
95 utility is not compatible with the original