+++ /dev/null
-<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2012 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="systemd-journalctl">
-
- <refentryinfo>
- <title>systemd-journalctl</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>systemd-journalctl</refentrytitle>
- <manvolnum>1</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>systemd-journalctl</refname>
- <refpurpose>Query the systemd journal</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <cmdsynopsis>
- <command>systemd-journalctl <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="opt">MATCH</arg></command>
- </cmdsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para><command>systemd-journalctl</command> may be
- used to query the contents of the
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- journal.</para>
-
- <para>If called without parameter will show the full
- contents of the journal, starting with the oldest
- entry collected.</para>
-
- <para>If a match argument is passed the output is
- filtered accordingly. A match is in the format
- <literal>FIELD=VALUE</literal>,
- e.g. <literal>_SYSTEMD_UNIT=httpd.service</literal>.</para>
-
- <para>Output is interleaved from all accessible
- journal files, whether they are rotated or currently
- being written, and regardless whether they belong to the
- system itself or are accessible user journals.</para>
-
- <para>All users are granted access to their private
- per-user journals. However, by default only root and
- users who are members of the <literal>adm</literal>
- group get access to the system journal and the
- journals of other users.</para>
- </refsect1>
-
- <refsect1>
- <title>Options</title>
-
- <para>The following options are understood:</para>
-
- <variablelist>
- <varlistentry>
- <term><option>--help</option></term>
- <term><option>-h</option></term>
-
- <listitem><para>Prints a short help
- text and exits.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--version</option></term>
-
- <listitem><para>Prints a short version
- string and exits.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--no-pager</option></term>
-
- <listitem><para>Do not pipe output into a
- pager.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--all</option></term>
- <term><option>-a</option></term>
-
- <listitem><para>Show all fields in
- full, even if they include unprintable
- characters or are very
- long.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--follow</option></term>
- <term><option>-f</option></term>
-
- <listitem><para>Show only most recent
- journal entries, and continously print
- new entries as they are appended to
- the journal.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--lines=</option></term>
- <term><option>-n</option></term>
-
- <listitem><para>Controls the number of
- journal lines to show, counting from
- the most recent ones. Takes a positive
- integer argument. In follow mode
- defaults to 10, otherwise is unset
- thus not limiting how many lines are
- shown.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--no-tail</option></term>
-
- <listitem><para>Show all stored output
- lines, even in follow mode. Undoes the
- effect of
- <option>--lines=</option>.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--output=</option></term>
- <term><option>-o</option></term>
-
- <listitem><para>Controls the
- formatting of the journal entries that are
- shown. Takes one of
- <literal>short</literal>,
- <literal>short-monotonic</literal>,
- <literal>verbose</literal>,
- <literal>export</literal>,
- <literal>json</literal>,
- <literal>cat</literal>. <literal>short</literal>
- is the default and generates an output
- that is mostly identical to the
- formatting of classic syslog log
- files, showing one line per journal
- entry. <literal>short-monotonic</literal>
- is very similar but shows monotonic
- timestamps instead of wallclock
- timestamps. <literal>verbose</literal>
- shows the full structered entry items
- with all
- fiels. <literal>export</literal>
- serializes the journal into a binary
- (but mostly text-based) stream
- suitable for backups and network
- transfer. <literal>json</literal>
- formats entries as JSON data
- structures. <literal>cat</literal>
- generates a very terse output only
- showing the actual message of each
- journal entry with no meta data, not
- even a timestamp.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--quiet</option></term>
- <term><option>-q</option></term>
-
- <listitem><para>Suppresses any warning
- message regarding inaccessable system
- journals when run as normal
- user.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--new-id128</option></term>
-
- <listitem><para>Instead of showing
- journal contents generate a new 128
- bit ID suitable for identifying
- messages. This is intended for usage
- by developers who need a new
- identifier for a new message they
- introduce and want to make
- recognizable. Will print the new ID in
- three different formats which can be
- copied into source code or
- similar.</para></listitem>
- </varlistentry>
-
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Exit status</title>
-
- <para>On success 0 is returned, a non-zero failure
- code otherwise.</para>
- </refsect1>
-
- <refsect1>
- <title>Environment</title>
-
- <variablelist>
- <varlistentry>
- <term><varname>$SYSTEMD_PAGER</varname></term>
- <listitem><para>Pager to use when
- <option>--no-pager</option> is not given;
- overrides <varname>$PAGER</varname>. Setting
- this to an empty string or the value
- <literal>cat</literal> is equivalent to passing
- <option>--no-pager</option>.</para></listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd-journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>
~ianmdlvl / elogind.git / blobdiff