<?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-activate"> <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>$LISTEN_FDS</varname> to <command>systemd-activate</command> will be passed through to the dameon, in the original positions. Other sockets specified with <option>--listen</option> will use consecutive descriptors. </para> </refsect1> <refsect1> <title>Options</title> <variablelist> <varlistentry> <term><option>--help</option></term> <term><option>-h</option></term> <listitem><para>Prints a short help text and exits.</para></listitem> </varlistentry> <varlistentry> <term><option>--version</option></term> <listitem><para>Prints a short version string and exits.</para></listitem> </varlistentry> <varlistentry> <term><option>-l <replaceable>address</replaceable></option></term> <term><option>--listen=<replaceable>address</replaceable></option></term> <listitem><para>Listen on this <replaceable>address</replaceable>. Takes a string like <literal>2000</literal> or <literal>127.0.0.1:2001</literal>.</para> </listitem> </varlistentry> <varlistentry> <term><option>-a</option></term> <term><option>--accept</option></term> <listitem><para>Launch a separate instance of daemon per connection and pass the connection socket as standard input and standard output.</para></listitem> </varlistentry> <varlistentry> <term><option>-E <replaceable>VAR</replaceable><optional>=<replaceable>VALUE</replaceable></optional></option></term> <term><option>--environment=<replaceable>VAR</replaceable><optional>=<replaceable>VALUE</replaceable></optional></option></term> <listitem><para>Add this variable to the environment of the launched process. If <replaceable>VAR</replaceable> is followed by <literal>=</literal>, assume that it is a variable–value pair. Otherwise, obtain the value from the environment of <command>systemd-activate</command> itself. </para></listitem> </varlistentry> </variablelist> </refsect1> <refsect1> <title>Environment variables</title> <variablelist class='environment-variables'> <varlistentry> <term><varname>$LISTEN_FDS</varname></term> <term><varname>$LISTEN_PID</varname></term> <listitem><para>See <citerefentry><refentrytitle>sd_listen_fds</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para></listitem> </varlistentry> <varlistentry> <term><varname>$SYSTEMD_LOG_TARGET</varname></term> <term><varname>$SYSTEMD_LOG_LEVEL</varname></term> <term><varname>$SYSTEMD_LOG_COLOR</varname></term> <term><varname>$SYSTEMD_LOG_LOCATION</varname></term> <listitem><para>Same as in <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para></listitem> </varlistentry> </variablelist> </refsect1> <refsect1> <title>Example 1</title> <programlisting>$ /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>