man/coredumpctl.xml

   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">
   4
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   6   This file is part of systemd.
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   8   Copyright 2012 Zbigniew Jędrzejewski-Szmek
   9
  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
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  18   Lesser General Public License for more details.
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  23
  24 <refentry id="coredumpctl" conditional='ENABLE_COREDUMP'
  25           xmlns:xi="http://www.w3.org/2001/XInclude">
  26
  27         <refentryinfo>
  28                 <title>coredumpctl</title>
  29                 <productname>systemd</productname>
  30
  31                 <authorgroup>
  32                         <author>
  33                                 <contrib>Developer</contrib>
  34                                 <firstname>Zbigniew</firstname>
  35                                 <surname>Jędrzejewski-Szmek</surname>
  36                                 <email>zbyszek@in.waw.pl</email>
  37                         </author>
  38                 </authorgroup>
  39         </refentryinfo>
  40
  41         <refmeta>
  42                 <refentrytitle>coredumpctl</refentrytitle>
  43                 <manvolnum>1</manvolnum>
  44         </refmeta>
  45
  46         <refnamediv>
  47                 <refname>coredumpctl</refname>
  48                 <refpurpose>Retrieve coredumps from the journal</refpurpose>
  49         </refnamediv>
  50
  51         <refsynopsisdiv>
  52                 <cmdsynopsis>
  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>
  57                 </cmdsynopsis>
  58         </refsynopsisdiv>
  59
  60         <refsect1>
  61                 <title>Description</title>
  62
  63                 <para><command>coredumpctl</command> may be used to
  64                 retrieve coredumps from
  65                 <citerefentry><refentrytitle>systemd-journald</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
  66         </refsect1>
  67
  68         <refsect1>
  69                 <title>Options</title>
  70
  71                 <para>The following options are understood:</para>
  72
  73                 <variablelist>
  74                         <varlistentry>
  75                                 <term><option>--no-legend</option></term>
  76
  77                                 <listitem><para>Do not print the column headers.
  78                                 </para></listitem>
  79                         </varlistentry>
  80
  81                         <varlistentry>
  82                                 <term><option>-1</option></term>
  83
  84                                 <listitem><para>Show information of a
  85                                 single coredump only, instead of
  86                                 listing all known coredumps.
  87                                 </para></listitem>
  88                         </varlistentry>
  89
  90                         <varlistentry>
  91                                 <term><option>-F</option></term>
  92                                 <term><option>--field=</option></term>
  93
  94                                 <listitem><para>Print all possible
  95                                 data values the specified field
  96                                 takes in matching coredump entries of the
  97                                 journal.</para></listitem>
  98                         </varlistentry>
  99
 100                         <varlistentry>
 101                                 <term><option>-o</option></term>
 102                                 <term><option>--output=FILE</option></term>
 103
 104                                 <listitem><para>Write the core to
 105                                 <option>FILE</option>.</para></listitem>
 106                         </varlistentry>
 107
 108                         <xi:include href="standard-options.xml" xpointer="help" />
 109                         <xi:include href="standard-options.xml" xpointer="version" />
 110                         <xi:include href="standard-options.xml" xpointer="no-pager" />
 111
 112                 </variablelist>
 113
 114                 <para>The following commands are understood:</para>
 115
 116                 <variablelist>
 117                         <varlistentry>
 118                                 <term><command>list</command></term>
 119
 120                                 <listitem><para>List coredumps
 121                                 captured in the journal matching
 122                                 specified characteristics. If no
 123                                 command is specified, this is the
 124                                 implied default.</para></listitem>
 125                         </varlistentry>
 126
 127                         <varlistentry>
 128                                 <term><command>info</command></term>
 129
 130                                 <listitem><para>Show detailed
 131                                 information about coredumps captured
 132                                 in the journal.</para></listitem>
 133                         </varlistentry>
 134
 135                         <varlistentry>
 136                                 <term><command>dump</command></term>
 137
 138                                 <listitem><para>Extract the last coredump
 139                                 matching specified characteristics.
 140                                 The coredump will be written on standard output,
 141                                 unless an output file is specified with
 142                                 <option>-o/--output</option>.
 143                                 </para></listitem>
 144                         </varlistentry>
 145
 146                         <varlistentry>
 147                                 <term><command>gdb</command></term>
 148
 149                                 <listitem><para>Invoke the GNU
 150                                 debugger on the last coredump matching
 151                                 specified characteristics.
 152                                 </para></listitem>
 153                         </varlistentry>
 154
 155                 </variablelist>
 156
 157         </refsect1>
 158
 159         <refsect1>
 160                 <title>Matching</title>
 161
 162                 <para>A match can be:</para>
 163
 164                 <variablelist>
 165                         <varlistentry>
 166                                 <term><replaceable>PID</replaceable></term>
 167
 168                                 <listitem><para>Process ID of the
 169                                 process that dumped
 170                                 core. An integer.</para></listitem>
 171                         </varlistentry>
 172
 173                         <varlistentry>
 174                                 <term><replaceable>COMM</replaceable></term>
 175
 176                                 <listitem><para>Name of the executable
 177                                 (matches <option>COREDUMP_COMM=</option>).
 178                                 Must not contain slashes.
 179                                 </para></listitem>
 180                         </varlistentry>
 181
 182                         <varlistentry>
 183                                 <term><replaceable>EXE</replaceable></term>
 184
 185                                 <listitem><para>Path to the executable
 186                                 (matches <option>COREDUMP_EXE=</option>).
 187                                 Must contain at least one slash.
 188                                 </para></listitem>
 189                         </varlistentry>
 190
 191                         <varlistentry>
 192                                 <term><replaceable>MATCH</replaceable></term>
 193
 194                                 <listitem><para>General journalctl predicates
 195                                 (see <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>).
 196                                 Must contain an equal sign.
 197                                 </para></listitem>
 198                         </varlistentry>
 199                 </variablelist>
 200         </refsect1>
 201
 202         <refsect1>
 203                 <title>Exit status</title>
 204                 <para>On success, 0 is returned; otherwise, a non-zero failure
 205                 code is returned. Not finding any matching coredumps is treated
 206                 as failure.
 207                 </para>
 208         </refsect1>
 209
 210         <refsect1>
 211                 <title>See Also</title>
 212                 <para>
 213                         <citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 214                         <citerefentry><refentrytitle>gdb</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 215                 </para>
 216         </refsect1>
 217
 218 </refentry>