1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>systemd-debug-generator</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><style>
a.headerlink {
color: #c60f0f;
font-size: 0.8em;
padding: 0 4px 0 4px;
text-decoration: none;
visibility: hidden;
}
a.headerlink:hover {
background-color: #c60f0f;
color: white;
}
h1:hover > a.headerlink, h2:hover > a.headerlink, h3:hover > a.headerlink, dt:hover > a.headerlink {
visibility: visible;
}
</style><a href="index.html">Index </a>·
<a href="systemd.directives.html">Directives </a>·
<a href="../python-systemd/index.html">Python </a>·
<a href="../libudev/index.html">libudev </a>·
<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 215</span><hr><div class="refentry"><a name="systemd-debug-generator"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-debug-generator — Generator for enabling a runtime debug shell and masking specific units at boot</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename">/usr/lib/systemd/system-generators/systemd-debug-generator</code></p></div><div class="refsect1"><a name="idm214183945248"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><code class="filename">systemd-debug-generator</code> is
a generator that reads the kernel command line and
understands three options:</p><p>If the <code class="option">systemd.mask=</code> option is
specified and followed by a unit name, this unit is
masked for the runtime, similar to the effect of
<a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>'s
<span class="command"><strong>mask</strong></span> command. This is useful to
boot with certain units removed from the initial boot
transaction for debugging system startup. May be
specified more than once.</p><p>If the <code class="option">systemd.wants=</code> option is
specified and followed by a unit name, a start job for
this unit is added to the initial transaction. This is
useful to start one ore more additional units at
boot. May be specified more than once.</p><p>If the <code class="option">systemd.debug-shell</code>
option is specified, the debug shell service
"<code class="literal">debug-shell.service</code>" is pulled into
the boot transaction. It will spawn a debug shell on
tty9 during early system startup. Note that the shell
may also be turned on persistently by enabling it with
<a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>'s
<span class="command"><strong>enable</strong></span> command.</p><p><code class="filename">systemd-debug-generator</code>
implements the <a class="ulink" href="http://www.freedesktop.org/wiki/Software/systemd/Generators" target="_top">generator
specification</a>.</p></div><div class="refsect1"><a name="idm214187199856"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
<a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>,
<a href="kernel-command-line.html"><span class="citerefentry"><span class="refentrytitle">kernel-command-line</span>(7)</span></a>
</p></div></div></body></html>
|
