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<?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 2013 Zbigniew Jędrzejewski-Szmek
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
-->
<refentry id="systemd-journal-gatewayd.service">
<refentryinfo>
<title>systemd-activate</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Zbigniew</firstname>
<surname>Jędrzejewski-Szmek</surname>
<email>zbyszek@in.waw.pl</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>systemd-activate</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-activate</refname>
<refpurpose>Test socket activation of daemons</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>/usr/lib/systemd/systemd-activate</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain"><replaceable>daemon</replaceable></arg>
<arg choice="opt" rep="repeat">OPTIONS</arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>systemd-activate</command> can be used to
launch a socket activated daemon from the command-line for
testing purposes. It can also be used to launch single instances
of the daemon per connection (inetd-style).
</para>
<para>The daemon to launch and its options should be specifed
after options intended for <command>systemd-activate</command>.
</para>
<para>If the <option>-a</option> option is given, file descriptor
of the connection will be used as the standard input and output of
the launched process. Otherwise, standard input and output will be
inherited, and sockets will be passed through file descriptors 3
and higher. Sockets passed through <varname>$LISTEN_FDS</varname>
to <command>systemd-activate</command> will be passed through to
the dameon, in the original positions. Other sockets specified
with <option>--listen</option> will use consecutive descriptors.
</para>
</refsect1>
<refsect1>
<title>Options</title>
<variablelist>
<varlistentry>
<term><option>--help</option></term>
<term><option>-h</option></term>
<listitem><para>Prints a short help
text and exits.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--version</option></term>
<listitem><para>Prints a short version
string and exits.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-l</option></term>
<term><option>--listen=<replaceable>address</replaceable></option></term>
<listitem><para>Listen on this <replaceable>address</replaceable>.
Takes a string like <literal>2000</literal> or
<literal>127.0.0.1:2001</literal>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-a</option></term>
<term><option>--accept</option></term>
<listitem><para>Launch a separate instance of daemon per
connection and pass the connection socket as standard input
and standard output.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Environment variables</title>
<variablelist class='environment-variables'>
<varlistentry>
<term><varname>$LISTEN_FDS</varname></term>
<term><varname>$LISTEN_PID</varname></term>
<para>See
<citerefentry><refentrytitle>sd_listen_fds</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para>
</varlistentry>
<varlistentry>
<term><varname>$SYSTEMD_LOG_TARGET</varname></term>
<term><varname>$SYSTEMD_LOG_LEVEL</varname></term>
<term><varname>$SYSTEMD_LOG_COLOR</varname></term>
<term><varname>$SYSTEMD_LOG_LOCATION</varname></term>
<para>Same as in
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Example 1</title>
<programlisting>$ /usr/lib/systemd/systemd-activate -l 2000 -a cat</programlisting>
<para>This runs an echo server on port 2000.</para>
</refsect1>
<refsect1>
<title>Example 2</title>
<programlisting>$ /usr/lib/systemd/systemd-activate -l 19531 /usr/lib/systemd/systemd-journal-gatewayd</programlisting>
<para>This runs a socket activated instance of
<citerefentry><refentrytitle>systemd-journal-gatewayd</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>cat</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
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