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author | Lennart Poettering <lennart@poettering.net> | 2012-03-15 22:19:36 +0100 |
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committer | Lennart Poettering <lennart@poettering.net> | 2012-03-15 22:19:36 +0100 |
commit | 9aac0b2c19c558b853da7a6d67a0929b2d44dee4 (patch) | |
tree | 5c7954348eed3896362469b44dc454dd0baea8da /man/systemd-cat.xml | |
parent | ccdbaf911196e2fc80eaa914bf22e01035ee1f3f (diff) |
man: document systemd-cat(1)
Diffstat (limited to 'man/systemd-cat.xml')
-rw-r--r-- | man/systemd-cat.xml | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/man/systemd-cat.xml b/man/systemd-cat.xml new file mode 100644 index 0000000000..41b3685378 --- /dev/null +++ b/man/systemd-cat.xml @@ -0,0 +1,205 @@ +<?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 2010 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-cat"> + + <refentryinfo> + <title>systemd-cat</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-cat</refentrytitle> + <manvolnum>1</manvolnum> + </refmeta> + + <refnamediv> + <refname>systemd-cat</refname> + <refpurpose>Connect a pipeline or program's output with the journal</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <cmdsynopsis> + <command>systemd-cat <arg choice="opt" rep="repeat">OPTIONS</arg> <arg>COMMAND</arg> <arg choice="opt" rep="repeat">ARGUMENTS</arg></command> + </cmdsynopsis> + <cmdsynopsis> + <command>systemd-cat <arg choice="opt" rep="repeat">OPTIONS</arg></command> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><command>systemd-cat</command> may be used to + connect STDOUT and STDERR of a process with the + journal, or as a filter tool in a shell pipeline to + pass the output the previous pipeline element + generates to the journal.</para> + + <para>If no parameter is passed + <command>systemd-command</command> will write + everything it reads from standard input (STDIN) to the journal.</para> + + <para>If parameters are passed they are executed as + command line with standard output (STDOUT) and standard + error output (STDERR) connected to the journal, so + that all it writes is stored in the journal.</para> + </refsect1> + + <refsect1> + <title>Options</title> + + <para>The following options are understood:</para> + + <variablelist> + <varlistentry> + <term><option>--h</option></term> + <term><option>--help</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>-t</option></term> + <term><option>--identifier=</option></term> + + <listitem><para>Specify a short string + that is used to identify the logging + tool. If not specified no identifying + string is written to the journal.</para></listitem> + </varlistentry> + + <varlistentry> + <term><option>-p</option></term> + <term><option>--priority=</option></term> + + <listitem><para>Specify the default + priority level for the logged + messages. Pass one of + <literal>emerg</literal>, + <literal>alert</literal>, + <literal>crit</literal>, + <literal>err</literal>, + <literal>warning</literal>, + <literal>notice</literal>, + <literal>info</literal>, + <literal>debug</literal>, resp. a + value between 0 and 7 (corresponding + to the same named levels). These + priority values are the same as + defined by + <citerefentry><refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum></citerefentry>. Defaults + to <literal>info</literal>. Note that + this simply controls the default, + individual lines may be logged with + different levels if they are prefixed + accordingly. For details see + <option>--level-prefix=</option> + below.</para></listitem> + </varlistentry> + + <varlistentry> + <term><option>--level-prefix=</option></term> + + <listitem><para>Controls whether lines + read are parsed for syslog priority + level prefixes. If enabled (the + default) a line prefixed with a + priority prefix such as + <literal><5></literal> is logged + at priority 5 + (<literal>notice</literal>), and + similar for the other priority + levels. Takes a boolean + argument.</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>Examples</title> + + <example> + <title>Invoke a program</title> + + <para>This calls <filename>/bin/ls</filename> + with STDOUT/STDERR connected to the + journal:</para> + + <programlisting># systemd-cat ls</programlisting> + </example> + + <example> + <title>Usage in a shell pipeline</title> + + <para>This builds a shell pipeline also + invoking <filename>/bin/ls</filename> and + writes the output it generates to the + journal:</para> + + <programlisting># ls | systemd-cat</programlisting> + </example> + + <para>Even though the two examples have very similar + effects the first is preferable since only one process + is running at a time, and both STDOUT and STDERR are + captured while in the second example only STDOUT is + captured.</para> + </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>logger</refentrytitle><manvolnum>1</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |