1 <?xml version='
1.0'
?> <!--*-nxml-*-->
2 <!DOCTYPE refentry PUBLIC
"-//OASIS//DTD DocBook XML V4.2//EN"
3 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
6 This file is part of systemd.
8 Copyright 2012 Zbigniew Jędrzejewski-Szmek
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 <refentry id=
"coredumpctl" conditional='ENABLE_COREDUMP'
25 xmlns:
xi=
"http://www.w3.org/2001/XInclude">
28 <title>coredumpctl
</title>
29 <productname>systemd
</productname>
33 <contrib>Developer
</contrib>
34 <firstname>Zbigniew
</firstname>
35 <surname>Jędrzejewski-Szmek
</surname>
36 <email>zbyszek@in.waw.pl
</email>
42 <refentrytitle>coredumpctl
</refentrytitle>
43 <manvolnum>1</manvolnum>
47 <refname>coredumpctl
</refname>
48 <refpurpose>Retrieve coredumps from the journal
</refpurpose>
53 <command>coredumpctl
</command>
54 <arg choice=
"opt" rep=
"repeat">OPTIONS
</arg>
55 <arg choice=
"req">COMMAND
</arg>
56 <arg choice=
"opt" rep=
"repeat">PID|COMM|EXE|MATCH
</arg>
61 <title>Description
</title>
63 <para><command>coredumpctl
</command> may be used to
64 retrieve coredumps from
65 <citerefentry><refentrytitle>systemd-journald
</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
</para>
69 <title>Options
</title>
71 <para>The following options are understood:
</para>
75 <term><option>--no-legend
</option></term>
77 <listitem><para>Do not print column headers.
82 <term><option>-
1</option></term>
84 <listitem><para>Show information of a single coredump only,
85 instead of listing all known coredumps.
</para></listitem>
89 <term><option>-F
</option> <replaceable>FIELD
</replaceable></term>
90 <term><option>--field=
</option><replaceable>FIELD
</replaceable></term>
92 <listitem><para>Print all possible data values the specified
93 field takes in matching coredump entries of the
94 journal.
</para></listitem>
98 <term><option>-o
</option> <replaceable>FILE
</replaceable></term>
99 <term><option>--output=
</option><replaceable>FILE
</replaceable></term>
101 <listitem><para>Write the core to
<option>FILE
</option>.
106 <term><option>-D
</option> <replaceable>DIR
</replaceable></term>
107 <term><option>--directory=
</option><replaceable>DIR
</replaceable></term>
109 <listitem><para>Use the journal files in the specified
<option>DIR
</option>.
113 <xi:include href=
"standard-options.xml" xpointer=
"help" />
114 <xi:include href=
"standard-options.xml" xpointer=
"version" />
115 <xi:include href=
"standard-options.xml" xpointer=
"no-pager" />
119 <para>The following commands are understood:
</para>
123 <term><command>list
</command></term>
125 <listitem><para>List coredumps captured in the journal
126 matching specified characteristics. If no command is
127 specified, this is the implied default.
</para></listitem>
131 <term><command>info
</command></term>
133 <listitem><para>Show detailed information about coredumps
134 captured in the journal.
</para></listitem>
138 <term><command>dump
</command></term>
140 <listitem><para>Extract the last coredump matching specified
141 characteristics. The coredump will be written on standard
142 output, unless an output file is specified with
143 <option>--output=
</option>.
</para></listitem>
147 <term><command>gdb
</command></term>
149 <listitem><para>Invoke the GNU debugger on the last coredump
150 matching specified characteristics.
</para></listitem>
158 <title>Matching
</title>
160 <para>A match can be:
</para>
164 <term><replaceable>PID
</replaceable></term>
166 <listitem><para>Process ID of the
168 core. An integer.
</para></listitem>
172 <term><replaceable>COMM
</replaceable></term>
174 <listitem><para>Name of the executable (matches
175 <option>COREDUMP_COMM=
</option>). Must not contain slashes.
180 <term><replaceable>EXE
</replaceable></term>
182 <listitem><para>Path to the executable (matches
183 <option>COREDUMP_EXE=
</option>). Must contain at least one
184 slash.
</para></listitem>
188 <term><replaceable>MATCH
</replaceable></term>
190 <listitem><para>General journalctl predicates (see
191 <citerefentry><refentrytitle>journalctl
</refentrytitle><manvolnum>1</manvolnum></citerefentry>).
192 Must contain an equal sign.
</para></listitem>
198 <title>Exit status
</title>
199 <para>On success,
0 is returned; otherwise, a non-zero failure
200 code is returned. Not finding any matching coredumps is treated as
206 <title>Examples
</title>
209 <title>List all the coredumps of a program named foo
</title>
211 <programlisting># coredumpctl list foo
</programlisting>
215 <title>Invoke gdb on the last coredump
</title>
217 <programlisting># coredumpctl gdb
</programlisting>
221 <title>Show information about a process that dumped core,
222 matching by its PID
6654</title>
224 <programlisting># coredumpctl info
6654</programlisting>
228 <title>Extract the last coredump of /usr/bin/bar to a file named
229 <filename noindex=
"true">bar.coredump
</filename></title>
231 <programlisting># coredumpctl -o bar.coredump dump /usr/bin/bar
</programlisting>
236 <title>See Also
</title>
238 <citerefentry><refentrytitle>systemd-coredump
</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
239 <citerefentry><refentrytitle>coredump.conf
</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
240 <citerefentry><refentrytitle>systemd-journald.service
</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
241 <citerefentry project='man-pages'
><refentrytitle>gdb
</refentrytitle><manvolnum>1</manvolnum></citerefentry>