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12b42c7667
This did not really work out as we had hoped. Trying to do this upstream introduced several problems that probably makes it better suited as a downstream patch after all. At any rate, it is not releaseable in the current state, so we at least need to revert this before the release. * by adjusting the path to binaries, but not do the same thing to the search path we end up with inconsistent man-pages. Adjusting the search path too would be quite messy, and it is not at all obvious that this is worth the effort, but at any rate it would have to be done before we could ship this. * this means that distributed man-pages does not make sense as they depend on config options, and for better or worse we are still distributing man pages, so that is something that definitely needs sorting out before we could ship with this patch. * we have long held that split-usr is only minimally supported in order to boot, and something we hope will eventually go away. So before we start adding even more magic/effort in order to make this work nicely, we should probably question if it makes sense at all.
179 lines
6.0 KiB
XML
179 lines
6.0 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 Lennart Poettering
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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="systemd-cat"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-cat</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>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</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>systemd-cat</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-cat</refname>
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<refpurpose>Connect a pipeline or program's output with the journal</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>systemd-cat <arg choice="opt" rep="repeat">OPTIONS</arg> <arg>COMMAND</arg> <arg choice="opt" rep="repeat">ARGUMENTS</arg></command>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>systemd-cat <arg choice="opt" rep="repeat">OPTIONS</arg></command>
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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>systemd-cat</command> may be used to connect the
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standard input and output of a process to the journal, or as a
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filter tool in a shell pipeline to pass the output the previous
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pipeline element generates to the journal.</para>
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<para>If no parameter is passed, <command>systemd-cat</command>
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will write everything it reads from standard input (stdin) to the
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journal.</para>
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<para>If parameters are passed, they are executed as command line
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with standard output (stdout) and standard error output (stderr)
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connected to the journal, so that all it writes is stored in the
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journal.</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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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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<varlistentry>
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<term><option>-t</option></term>
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<term><option>--identifier=</option></term>
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<listitem><para>Specify a short string that is used to
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identify the logging tool. If not specified, no identification
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string is written to the journal.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-p</option></term>
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<term><option>--priority=</option></term>
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<listitem><para>Specify the default priority level for the
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logged messages. Pass one of
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<literal>emerg</literal>,
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<literal>alert</literal>,
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<literal>crit</literal>,
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<literal>err</literal>,
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<literal>warning</literal>,
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<literal>notice</literal>,
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<literal>info</literal>,
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<literal>debug</literal>, or a
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value between 0 and 7 (corresponding to the same named
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levels). These priority values are the same as defined by
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<citerefentry project='man-pages'><refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
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Defaults to <literal>info</literal>. Note that this simply
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controls the default, individual lines may be logged with
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different levels if they are prefixed accordingly. For details
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see <option>--level-prefix=</option> below.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--level-prefix=</option></term>
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<listitem><para>Controls whether lines read are parsed for
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syslog priority level prefixes. If enabled (the default), a
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line prefixed with a priority prefix such as
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<literal><5></literal> is logged at priority 5
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(<literal>notice</literal>), and similar for the other
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priority levels. Takes a boolean argument.</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, a non-zero failure code
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otherwise.</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>Invoke a program</title>
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<para>This calls <filename noindex='true'>/bin/ls</filename>
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with standard output and error connected to the journal:</para>
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<programlisting># systemd-cat ls</programlisting>
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</example>
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<example>
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<title>Usage in a shell pipeline</title>
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<para>This builds a shell pipeline also invoking
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<filename>/bin/ls</filename> and writes the output it generates
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to the journal:</para>
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<programlisting># ls | systemd-cat</programlisting>
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</example>
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<para>Even though the two examples have very similar effects the
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first is preferable since only one process is running at a time,
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and both stdout and stderr are captured while in the second
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example, only stdout is captured.</para>
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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</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>logger</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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