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249 lines
10 KiB
XML
249 lines
10 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2012 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="coredumpctl" conditional='ENABLE_COREDUMP'
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>coredumpctl</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Zbigniew</firstname>
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<surname>Jędrzejewski-Szmek</surname>
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<email>zbyszek@in.waw.pl</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>coredumpctl</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>coredumpctl</refname>
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<refpurpose>Retrieve coredumps from the journal</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>coredumpctl</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="req">COMMAND</arg>
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<arg choice="opt" rep="repeat">PID|COMM|EXE|MATCH</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>coredumpctl</command> may be used to
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retrieve coredumps from
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<citerefentry><refentrytitle>systemd-journald</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>--no-legend</option></term>
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<listitem><para>Do not print the column headers.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-1</option></term>
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<listitem><para>Show information of a
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single coredump only, instead of
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listing all known coredumps.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-F</option></term>
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<term><option>--field=</option></term>
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<listitem><para>Print all possible
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data values the specified field
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takes in matching coredump entries of the
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journal.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-o</option></term>
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<term><option>--output=FILE</option></term>
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<listitem><para>Write the core to
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<option>FILE</option>.</para></listitem>
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</varlistentry>
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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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<xi:include href="standard-options.xml" xpointer="no-pager" />
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</variablelist>
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<para>The following commands are understood:</para>
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<variablelist>
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<varlistentry>
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<term><command>list</command></term>
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<listitem><para>List coredumps
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captured in the journal matching
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specified characteristics. If no
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command is specified, this is the
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implied default.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>info</command></term>
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<listitem><para>Show detailed
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information about coredumps captured
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in the journal.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>dump</command></term>
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<listitem><para>Extract the last coredump
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matching specified characteristics.
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The coredump will be written on standard output,
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unless an output file is specified with
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<option>-o/--output</option>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><command>gdb</command></term>
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<listitem><para>Invoke the GNU
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debugger on the last coredump matching
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specified characteristics.
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</para></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Matching</title>
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<para>A match can be:</para>
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<variablelist>
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<varlistentry>
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<term><replaceable>PID</replaceable></term>
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<listitem><para>Process ID of the
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process that dumped
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core. An integer.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable>COMM</replaceable></term>
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<listitem><para>Name of the executable
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(matches <option>COREDUMP_COMM=</option>).
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Must not contain slashes.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable>EXE</replaceable></term>
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<listitem><para>Path to the executable
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(matches <option>COREDUMP_EXE=</option>).
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Must contain at least one slash.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable>MATCH</replaceable></term>
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<listitem><para>General journalctl predicates
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(see <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>).
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Must contain an equal sign.
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</para></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>On success, 0 is returned; otherwise, a non-zero failure
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code is returned. Not finding any matching coredumps is treated
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as failure.
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</para>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<example>
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<title>List all the coredumps of a program named foo</title>
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<programlisting># coredumpctl list foo</programlisting>
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</example>
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<example>
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<title>Invoke gdb on the last coredump</title>
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<programlisting># coredumpctl gdb</programlisting>
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</example>
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<example>
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<title>Show information about a process that dumped core, matching by its PID 6654</title>
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<programlisting># coredumpctl info 6654</programlisting>
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</example>
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<example>
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<title>Extract the last coredump of /usr/bin/bar to a file named bar.coredump</title>
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<programlisting># coredumpctl -o bar.coredump dump /usr/bin/bar</programlisting>
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</example>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd-coredump</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>coredump.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>gdb</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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