gcore
Generate a core file for a running process
SYNOPSIS
gcore [-a] [-o prefix] pid1 [pid2...pidN]
DESCRIPTION
Generate core dumps of one or more running programs with process IDs
pid1, pid2, etc. A core file produced by
gcore is equivalent to one produced by the kernel when
the process crashes (and when ulimit -c
was used to set up
an appropriate core dump limit). However, unlike after a crash, after
gcore finishes its job the program remains running
without any change.
OPTIONS
- -a
-
Dump all memory mappings. The actual effect of this option depends on the Operating System. On GNU/Linux, it will disable
use-coredump-filter
and enabledump-excluded-mappings
. - -o prefix
-
The optional argument prefix specifies the prefix to be used when composing the file names of the core dumps. The file name is composed as prefix.pid, where pid is the process ID of the running program being analyzed by gcore. If not specified, prefix defaults to gcore.
COPYRIGHT
Copyright (c) 1988-2023 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with the Invariant Sections being Free Software and Free Software Needs Free Documentation, with the Front-Cover Texts being A GNU Manual, and with the Back-Cover Texts as in (a) below.
(a) The FSF's Back-Cover Text is: You are free to copy and modify this GNU Manual. Buying copies from GNU Press supports the FSF in developing GNU and promoting software freedom.
SEE ALSO
The full documentation for GDB is maintained as a Texinfo manual. If the info and gdb programs and GDB's Texinfo documentation are properly installed at your site, the command info gdb should give you access to the complete manual. Using GDB: A Guide to the GNU Source-Level Debugger, Richard M. Stallman and Roland H. Pesch, July 1991.