| <html lang="en"> |
| <head> |
| <title>gcore man - Debugging with GDB</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Debugging with GDB"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="Man-Pages.html#Man-Pages" title="Man Pages"> |
| <link rel="prev" href="gdbserver-man.html#gdbserver-man" title="gdbserver man"> |
| <link rel="next" href="gdbinit-man.html#gdbinit-man" title="gdbinit man"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988-2019 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.'' |
| --> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="gcore-man"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="gdbinit-man.html#gdbinit-man">gdbinit man</a>, |
| Previous: <a rel="previous" accesskey="p" href="gdbserver-man.html#gdbserver-man">gdbserver man</a>, |
| Up: <a rel="up" accesskey="u" href="Man-Pages.html#Man-Pages">Man Pages</a> |
| <hr> |
| </div> |
| |
| <h3 class="heading">gcore</h3> |
| |
| <!-- man title gcore Generate a core file of a running program --> |
| <pre class="format"><!-- man begin SYNOPSIS gcore --> |
| gcore [-a] [-o <var>prefix</var>] <var>pid1</var> [<var>pid2</var>...<var>pidN</var>] |
| <!-- man end --> |
| </pre> |
| <!-- man begin DESCRIPTION gcore --> |
| <p>Generate core dumps of one or more running programs with process IDs |
| <var>pid1</var>, <var>pid2</var>, etc. A core file produced by <samp><span class="command">gcore</span></samp> |
| is equivalent to one produced by the kernel when the process crashes |
| (and when <kbd>ulimit -c</kbd> was used to set up an appropriate core dump |
| limit). However, unlike after a crash, after <samp><span class="command">gcore</span></samp> finishes |
| its job the program remains running without any change. |
| <!-- man end --> |
| |
| <!-- man begin OPTIONS gcore --> |
| <dl> |
| <dt><samp><span class="env">-a</span></samp><dd>Dump all memory mappings. The actual effect of this option depends on |
| the Operating System. On <span class="sc">gnu</span>/Linux, it will disable |
| <code>use-coredump-filter</code> (see <a href="set-use_002dcoredump_002dfilter.html#set-use_002dcoredump_002dfilter">set use-coredump-filter</a>) and |
| enable <code>dump-excluded-mappings</code> (see <a href="set-dump_002dexcluded_002dmappings.html#set-dump_002dexcluded_002dmappings">set dump-excluded-mappings</a>). |
| |
| <br><dt><samp><span class="env">-o </span><var>prefix</var></samp><dd>The optional argument <var>prefix</var> specifies the prefix to be used |
| when composing the file names of the core dumps. The file name is |
| composed as <samp><var>prefix</var><span class="file">.</span><var>pid</var></samp>, where <var>pid</var> is the |
| process ID of the running program being analyzed by <samp><span class="command">gcore</span></samp>. |
| If not specified, <var>prefix</var> defaults to <var>gcore</var>. |
| </dl> |
| <!-- man end --> |
| |
| <!-- man begin SEEALSO gcore --> |
| <!-- man end --> |
| </body></html> |
| |