GCORE(1)                    GNU Development Tools                   GCORE(1)

NAME         top

       gcore - Generate a core file of a running program

SYNOPSIS         top

       gcore [-a] [-o filename] pid

DESCRIPTION         top

       Generate a core dump of a running program with process ID pid.
       Produced file is equivalent to a kernel produced core file as if the
       process crashed (and if "ulimit -c" were used to set up an
       appropriate core dump limit).  Unlike after a crash, after gcore the
       program remains running without any change.

OPTIONS         top

       -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 enable "dump-excluded-mappings".

       -o filename
           The optional argument filename specifies the file name where to
           put the core dump.  If not specified, the file name defaults to
 , where pid is the running program process ID.

SEE ALSO         top

       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.

COPYRIGHT         top

       Copyright (c) 1988-2018 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."

COLOPHON         top

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gdb-8.2                          2018-09-05                         GCORE(1)