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</style><a href="index.html">Index </a>·
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<a href="systemd.directives.html">Directives </a>·
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<a href="../python-systemd/index.html">Python </a>·
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<a href="../libudev/index.html">libudev </a>·
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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 219</span><hr><div class="refentry"><a name="systemd-notify"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-notify — Notify service manager about start-up completion and other daemon status changes</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="command">systemd-notify [OPTIONS...] [VARIABLE=VALUE...]</code> </p></div></div><div class="refsect1"><a name="idm139882189229392"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><span class="command"><strong>systemd-notify</strong></span> may be called by daemon
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scripts to notify the init system about status changes. It can be
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used to send arbitrary information, encoded in an
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environment-block-like list of strings. Most importantly it can be
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used for start-up completion notification.</p><p>This is mostly just a wrapper around
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<code class="function">sd_notify()</code> and makes this functionality
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available to shell scripts. For details see
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<a href="sd_notify.html"><span class="citerefentry"><span class="refentrytitle">sd_notify</span>(3)</span></a>.
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</p><p>The command line may carry a list of environment variables
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to send as part of the status update.</p><p>Note that systemd will refuse reception of status updates
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from this command unless <code class="varname">NotifyAccess=all</code> is
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set for the service unit this command is called from.</p></div><div class="refsect1"><a name="idm139882189224112"></a><h2 id="Options">Options<a class="headerlink" title="Permalink to this headline" href="#Options">¶</a></h2><p>The following options are understood:</p><div class="variablelist"><dl class="variablelist"><dt id="--ready"><span class="term"><code class="option">--ready</code></span><a class="headerlink" title="Permalink to this term" href="#--ready">¶</a></dt><dd><p>Inform the init system about service start-up
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completion. This is equivalent to <span class="command"><strong>systemd-notify
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READY=1</strong></span>. For details about the semantics of this
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option see
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<a href="sd_notify.html"><span class="citerefentry"><span class="refentrytitle">sd_notify</span>(3)</span></a>.</p></dd><dt id="--pid="><span class="term"><code class="option">--pid=</code></span><a class="headerlink" title="Permalink to this term" href="#--pid=">¶</a></dt><dd><p>Inform the init system about the main PID of
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the daemon. Takes a PID as argument. If the argument is
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omitted, the PID of the process that invoked
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<span class="command"><strong>systemd-notify</strong></span> is used. This is equivalent
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to <span class="command"><strong>systemd-notify MAINPID=$PID</strong></span>. For details
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about the semantics of this option see
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<a href="sd_notify.html"><span class="citerefentry"><span class="refentrytitle">sd_notify</span>(3)</span></a>.</p></dd><dt id="--status="><span class="term"><code class="option">--status=</code></span><a class="headerlink" title="Permalink to this term" href="#--status=">¶</a></dt><dd><p>Send a free-form status string for the daemon
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to the init systemd. This option takes the status string as
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argument. This is equivalent to <span class="command"><strong>systemd-notify
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STATUS=...</strong></span>. For details about the semantics of this
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option see
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<a href="sd_notify.html"><span class="citerefentry"><span class="refentrytitle">sd_notify</span>(3)</span></a>.</p></dd><dt id="--booted"><span class="term"><code class="option">--booted</code></span><a class="headerlink" title="Permalink to this term" href="#--booted">¶</a></dt><dd><p>Returns 0 if the system was booted up with
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systemd, non-zero otherwise. If this option is passed, no
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message is sent. This option is hence unrelated to the other
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options. For details about the semantics of this option, see
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<a href="sd_booted.html"><span class="citerefentry"><span class="refentrytitle">sd_booted</span>(3)</span></a>.</p></dd><dt id="-h"><span class="term"><code class="option">-h</code>, </span><span class="term"><code class="option">--help</code></span><a class="headerlink" title="Permalink to this term" href="#-h">¶</a></dt><dd><p><a name="help-text"></a>Print a short help text and exit.
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</p></dd><dt id="--version"><span class="term"><code class="option">--version</code></span><a class="headerlink" title="Permalink to this term" href="#--version">¶</a></dt><dd><p><a name="version-text"></a>Print a short version string and exit.</p></dd></dl></div></div><div class="refsect1"><a name="idm139882193110992"></a><h2 id="Exit status">Exit status<a class="headerlink" title="Permalink to this headline" href="#Exit%20status">¶</a></h2><p>On success, 0 is returned, a non-zero failure code
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otherwise.</p></div><div class="refsect1"><a name="idm139882193109808"></a><h2 id="Example">Example<a class="headerlink" title="Permalink to this headline" href="#Example">¶</a></h2><div class="example"><a name="idm139882193109136"></a><p class="title"><b>Example 1. Start-up Notification and Status Updates</b></p><div class="example-contents"><p>A simple shell daemon that sends start-up notifications
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after having set up its communication channel. During runtime it
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sends further status updates to the init system:</p><pre class="programlisting">#!/bin/bash
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mkfifo /tmp/waldo
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systemd-notify --ready --status="Waiting for data..."
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while : ; do
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read a < /tmp/waldo
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systemd-notify --status="Processing $a"
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# Do something with $a ...
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systemd-notify --status="Waiting for data..."
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done</pre></div></div><br class="example-break"></div><div class="refsect1"><a name="idm139882193106272"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
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<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
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<a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>,
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<a href="systemd.unit.html"><span class="citerefentry"><span class="refentrytitle">systemd.unit</span>(5)</span></a>,
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<a href="sd_notify.html"><span class="citerefentry"><span class="refentrytitle">sd_notify</span>(3)</span></a>,
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<a href="sd_booted.html"><span class="citerefentry"><span class="refentrytitle">sd_booted</span>(3)</span></a>
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</p></div></div></body></html>
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