1.\" Copyright (c) 1983, 1990, 1992, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 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. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)gcore.1 8.2 (Berkeley) 4/18/94 33.\" 34.Dd "April 18, 1994" 35.Dt GCORE 1 36.Os BSD 4.2 37.Sh NAME 38.Nm gcore 39.Nd get core images of running process 40.Sh SYNOPSIS 41.Nm gcore 42.Op Fl s 43.Op Fl c Ar core 44.Ar exec pid 45.Sh DESCRIPTION 46.Nm Gcore 47creates a core image of the specified process, 48suitable for use with 49.Xr gdb 1 . 50By default, the core is written to the file 51.Dq Pa core.<pid> . 52Both the executable image, 53.Ar exec , 54and the process identifier, 55.Ar pid , 56must be given on the command line. 57.Pp 58The options are: 59.Bl -tag -width indent 60.It Fl c 61Write the core file to the specified file instead of 62.Dq Pa core.<pid> . 63.It Fl s 64Stop the process while gathering the core image, and resume it 65when done. This guarantees that the resulting core dump will 66be in a consistent state. The process is resumed even if it was 67already stopped. 68The same effect can be achieved manually with 69.Xr kill 1 . 70.El 71.Sh FILES 72.Bl -tag -width /var/log/messages -compact 73.It Pa core.<pid> 74The core image. 75.EL 76.Dp 77.Sh HISTORY 78.Nm Gcore 79appeared in 80.Bx 4.2 . 81.Sh BUGS 82Context switches or paging activity that occur while 83.Nm gcore 84is running may cause the program to become confused. 85For best results, use -s to temporarily stop the target process. 86.Pp 87.Nm Gcore 88is not compatible with the original 89.Bx 4.2 90version. 91In particular, 92.Bx 4.4 93requires the 94.Ar exec 95argument. 96