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22 | <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 219</span><hr><div class="refentry"><a name="systemd-suspend.service"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-suspend.service, systemd-hibernate.service, systemd-hybrid-sleep.service, systemd-sleep — System sleep state logic</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename">systemd-suspend.service</code></p><p><code class="filename">systemd-hibernate.service</code></p><p><code class="filename">systemd-hybrid-sleep.service</code></p><p><code class="filename">/usr/lib/systemd/system-sleep</code></p></div><div class="refsect1"><a name="idm140595851644208"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><code class="filename">systemd-suspend.service</code> is a system |
| 23 | service that is pulled in by <code class="filename">suspend.target</code> | |
| 24 | and is responsible for the actual system suspend. Similarly, | |
| 25 | <code class="filename">systemd-hibernate.service</code> is pulled in by | |
| 26 | <code class="filename">hibernate.target</code> to execute the actual | |
| 27 | hibernation. Finally, | |
| 28 | <code class="filename">systemd-hybrid-sleep.service</code> is pulled in by | |
| 29 | <code class="filename">hybrid-sleep.target</code> to execute hybrid | |
| 30 | hibernation with system suspend.</p><p>Immediately before entering system suspend and/or | |
| 31 | hibernation <code class="filename">systemd-suspend.service</code> (and the | |
| 32 | other mentioned units, respectively) will run all executables in | |
| 33 | <code class="filename">/usr/lib/systemd/system-sleep/</code> and pass two | |
| 34 | arguments to them. The first argument will be | |
| 35 | "<code class="literal">pre</code>", the second either | |
| 36 | "<code class="literal">suspend</code>", "<code class="literal">hibernate</code>", or | |
| 37 | "<code class="literal">hybrid-sleep</code>" depending on the chosen action. | |
| 38 | Immediately after leaving system suspend and/or hibernation the | |
| 39 | same executables are run, but the first argument is now | |
| 40 | "<code class="literal">post</code>". All executables in this directory are | |
| 41 | executed in parallel, and execution of the action is not continued | |
| 42 | until all executables have finished.</p><p>Note that scripts or binaries dropped in | |
| 43 | <code class="filename">/usr/lib/systemd/system-sleep/</code> are intended | |
| 44 | for local use only and should be considered hacks. If applications | |
| 45 | want to be notified of system suspend/hibernation and resume, | |
| 46 | there are much nicer interfaces available.</p><p>Note that | |
| 47 | <code class="filename">systemd-suspend.service</code>, | |
| 48 | <code class="filename">systemd-hibernate.service</code>, and | |
| 49 | <code class="filename">systemd-hybrid-sleep.service</code> | |
| 50 | should never be executed directly. Instead, trigger system sleep | |
| 51 | states with a command such as "<code class="literal">systemctl suspend</code>" | |
| 52 | or similar.</p><p>Internally, this service will echo a string like | |
| 53 | "<code class="literal">mem</code>" into <code class="filename">/sys/power/state</code>, | |
| 54 | to trigger the actual system suspend. What exactly is written | |
| 55 | where can be configured in the "<code class="literal">[Sleep]</code>" section | |
| 56 | of <code class="filename">/etc/systemd/sleep.conf</code> or a | |
| 57 | <code class="filename">sleep.conf.d</code> file. See | |
| 58 | <a href="systemd-sleep.conf.html"><span class="citerefentry"><span class="refentrytitle">systemd-sleep.conf</span>(5)</span></a>. | |
| 59 | </p></div><div class="refsect1"><a name="idm140595855526128"></a><h2 id="Options">Options<a class="headerlink" title="Permalink to this headline" href="#Options">¶</a></h2><p><span class="command"><strong>systemd-sleep</strong></span> understands the | |
| 60 | following commands:</p><div class="variablelist"><dl class="variablelist"><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. | |
| 61 | </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><dt id="suspend"><span class="term"><code class="option">suspend</code>, </span><span class="term"><code class="option">hibernate</code>, </span><span class="term"><code class="option">hybrid-sleep</code></span><a class="headerlink" title="Permalink to this term" href="#suspend">¶</a></dt><dd><p>Suspend, hibernate, or put the system to | |
| 62 | hybrid sleep.</p></dd></dl></div></div><div class="refsect1"><a name="idm140595855519600"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p> | |
| 63 | <a href="systemd-sleep.conf.html"><span class="citerefentry"><span class="refentrytitle">systemd-sleep.conf</span>(5)</span></a>, | |
| 64 | <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>, | |
| 65 | <a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>, | |
| 66 | <a href="systemd.special.html"><span class="citerefentry"><span class="refentrytitle">systemd.special</span>(7)</span></a>, | |
| 67 | <a href="systemd-halt.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-halt.service</span>(8)</span></a> | |
| 68 | </p></div></div></body></html> |