Provided by: gdb_8.2-0ubuntu1_amd64 bug

NAME

       gcore - Generate a core file of a running program

SYNOPSIS

       gcore [-a] [-o filename] pid

DESCRIPTION

       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

       -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 core.pid, where pid is the running program
           process ID.

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.

COPYRIGHT

       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."