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f47781d8 | 22 | <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 218</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="idm140531201640528"></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 |
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23 | a system service that is pulled in by |
24 | <code class="filename">suspend.target</code> and is responsible | |
25 | for the actual system suspend. Similarly, | |
26 | <code class="filename">systemd-hibernate.service</code> is | |
27 | pulled in by <code class="filename">hibernate.target</code> to | |
28 | execute the actual hibernation. Finally, | |
29 | <code class="filename">systemd-hybrid-sleep.service</code> is | |
30 | pulled in by <code class="filename">hybrid-sleep.target</code> | |
31 | to execute hybrid hibernation with system | |
32 | suspend.</p><p>Immediately before entering system suspend | |
33 | and/or hibernation | |
34 | <code class="filename">systemd-suspend.service</code> (and the | |
35 | other mentioned units, respectively) will run all | |
36 | executables in | |
37 | <code class="filename">/usr/lib/systemd/system-sleep/</code> | |
38 | and pass two arguments to them. The first argument | |
39 | will be "<code class="literal">pre</code>", the second either | |
40 | "<code class="literal">suspend</code>", | |
41 | "<code class="literal">hibernate</code>", or | |
42 | "<code class="literal">hybrid-sleep</code>" depending on the | |
43 | chosen action. Immediately after leaving system | |
44 | suspend and/or hibernation the same executables are run, | |
45 | but the first argument is now | |
46 | "<code class="literal">post</code>". All executables in this | |
47 | directory are executed in parallel, and execution of | |
48 | the action is not continued until all executables | |
49 | have finished.</p><p>Note that scripts or binaries dropped in | |
50 | <code class="filename">/usr/lib/systemd/system-sleep/</code> | |
51 | are intended for local use only and should be | |
52 | considered hacks. If applications want to be notified | |
14228c0d | 53 | of system suspend/hibernation and resume, there are |
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54 | much nicer interfaces available.</p><p>Note that |
55 | <code class="filename">systemd-suspend.service</code>, | |
56 | <code class="filename">systemd-hibernate.service</code>, and | |
57 | <code class="filename">systemd-hybrid-sleep.service</code> | |
58 | should never be executed directly. Instead, trigger | |
59 | system sleep states with a command such as | |
60 | "<code class="literal">systemctl suspend</code>" or | |
61 | similar.</p><p>Internally, this service will echo a string like | |
62 | "<code class="literal">mem</code>" into | |
63 | <code class="filename">/sys/power/state</code>, to trigger the | |
64 | actual system suspend. What exactly is written | |
14228c0d | 65 | where can be configured in the "<code class="literal">[Sleep]</code>" |
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66 | section of <code class="filename">/etc/systemd/sleep.conf</code> or a |
67 | <code class="filename">sleep.conf.d</code> file. | |
663996b3 | 68 | See <a href="systemd-sleep.conf.html"><span class="citerefentry"><span class="refentrytitle">systemd-sleep.conf</span>(5)</span></a>. |
f47781d8 | 69 | </p></div><div class="refsect1"><a name="idm140531205519408"></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 |
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70 | 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. |
71 | </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 | |
f47781d8 | 72 | put the system to hybrid sleep.</p></dd></dl></div></div><div class="refsect1"><a name="idm140531205512928"></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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73 | <a href="systemd-sleep.conf.html"><span class="citerefentry"><span class="refentrytitle">systemd-sleep.conf</span>(5)</span></a>, |
74 | <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>, | |
75 | <a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>, | |
76 | <a href="systemd.special.html"><span class="citerefentry"><span class="refentrytitle">systemd.special</span>(7)</span></a>, | |
77 | <a href="systemd-halt.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-halt.service</span>(8)</span></a> | |
78 | </p></div></div></body></html> |