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1 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>shutdown</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><style> |
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| 18 | </style><a href="index.html">Index </a>· | |
| 19 | <a href="systemd.directives.html">Directives </a>· | |
| 20 | <a href="../python-systemd/index.html">Python </a>· | |
| 21 | <a href="../libudev/index.html">libudev </a>· | |
| f47781d8 | 22 | <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 218</span><hr><div class="refentry"><a name="shutdown"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>shutdown — Halt, power-off or reboot the machine</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="command">shutdown [OPTIONS...] [TIME] [WALL...]</code> </p></div></div><div class="refsect1"><a name="idm139839027990128"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><span class="command"><strong>shutdown</strong></span> may be used to halt, |
| 663996b3 | 23 | power-off or reboot the machine.</p><p>The first argument may be a time string (which |
| 14228c0d | 24 | is usually "<code class="literal">now</code>"). Optionally, this |
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25 | may be followed by a wall message to be sent to all |
| 26 | logged-in users before going down.</p><p>The time string may either be in the format | |
| 14228c0d | 27 | "<code class="literal">hh:mm</code>" for hour/minutes specifying |
| 663996b3 MS |
28 | the time to execute the shutdown at, specified in 24h |
| 29 | clock format. Alternatively it may be in the syntax | |
| 14228c0d MB |
30 | "<code class="literal">+m</code>" referring to the specified |
| 31 | number of minutes m from now. "<code class="literal">now</code>" | |
| 32 | is an alias for "<code class="literal">+0</code>", i.e. for | |
| 663996b3 | 33 | triggering an immediate shutdown. If no time argument |
| 14228c0d | 34 | is specified, "<code class="literal">+1</code>" is |
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35 | implied.</p><p>Note that to specify a wall message you must |
| 36 | specify a time argument, too.</p><p>If the time argument is used, 5 minutes | |
| 37 | before the system goes down the | |
| 38 | <code class="filename">/run/nologin</code> file is created to | |
| 39 | ensure that further logins shall not be | |
| f47781d8 | 40 | allowed.</p></div><div class="refsect1"><a name="idm139839028053664"></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="--help"><span class="term"><code class="option">--help</code></span><a class="headerlink" title="Permalink to this term" href="#--help">¶</a></dt><dd><p><a name="help-text"></a>Print a short help text and exit. |
| 60f067b4 | 41 | </p></dd><dt id="-H"><span class="term"><code class="option">-H</code>, </span><span class="term"><code class="option">--halt</code></span><a class="headerlink" title="Permalink to this term" href="#-H">¶</a></dt><dd><p>Halt the machine.</p></dd><dt id="-P"><span class="term"><code class="option">-P</code>, </span><span class="term"><code class="option">--poweroff</code></span><a class="headerlink" title="Permalink to this term" href="#-P">¶</a></dt><dd><p>Power-off the |
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42 | machine (the default).</p></dd><dt id="-r"><span class="term"><code class="option">-r</code>, </span><span class="term"><code class="option">--reboot</code></span><a class="headerlink" title="Permalink to this term" href="#-r">¶</a></dt><dd><p>Reboot the |
| 43 | machine.</p></dd><dt id="-h"><span class="term"><code class="option">-h</code></span><a class="headerlink" title="Permalink to this term" href="#-h">¶</a></dt><dd><p>Equivalent to | |
| 44 | <code class="option">--poweroff</code>, unless | |
| 45 | <code class="option">--halt</code> is | |
| 14228c0d | 46 | specified.</p></dd><dt id="-k"><span class="term"><code class="option">-k</code></span><a class="headerlink" title="Permalink to this term" href="#-k">¶</a></dt><dd><p>Do not halt, power-off, |
| 663996b3 | 47 | reboot, just write wall |
| 14228c0d | 48 | message.</p></dd><dt id="--no-wall"><span class="term"><code class="option">--no-wall</code></span><a class="headerlink" title="Permalink to this term" href="#--no-wall">¶</a></dt><dd><p>Do not send wall |
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49 | message before |
| 50 | halt, power-off, reboot.</p></dd><dt id="-c"><span class="term"><code class="option">-c</code></span><a class="headerlink" title="Permalink to this term" href="#-c">¶</a></dt><dd><p>Cancel a pending | |
| 51 | shutdown. This may be used cancel the | |
| 52 | effect of an invocation of | |
| 53 | <span class="command"><strong>shutdown</strong></span> with a | |
| 54 | time argument that is not | |
| 14228c0d | 55 | "<code class="literal">+0</code>" or |
| f47781d8 MP |
56 | "<code class="literal">now</code>".</p></dd></dl></div></div><div class="refsect1"><a name="idm139839028111360"></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 |
| 57 | code otherwise.</p></div><div class="refsect1"><a name="idm139839028110176"></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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58 | <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>, |
| 59 | <a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>, | |
| 60 | <a href="halt.html"><span class="citerefentry"><span class="refentrytitle">halt</span>(8)</span></a>, | |
| 5eef597e | 61 | <a href="http://man7.org/linux/man-pages/man1/wall.1.html"><span class="citerefentry"><span class="refentrytitle">wall</span>(1)</span></a> |
| 663996b3 | 62 | </p></div></div></body></html> |