man/systemd-coredumpctl.xml

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