<para>Systemd contains native implementations of
various tasks that need to be executed as part of the
- boot process. For example, it sets the host name or
+ boot process. For example, it sets the hostname or
configures the loopback network device. It also sets
up and mounts various API file systems, such as
<filename>/sys</filename> or
<variablelist>
<varlistentry>
- <term>SIGTERM</term>
+ <term><constant>SIGTERM</constant></term>
<listitem><para>Upon receiving this
signal the systemd system manager
</varlistentry>
<varlistentry>
- <term>SIGINT</term>
+ <term><constant>SIGINT</constant></term>
<listitem><para>Upon receiving this
signal the systemd system manager will
<para>systemd user managers
treat this signal the same way as
- SIGTERM.</para></listitem>
+ <constant>SIGTERM</constant>.</para></listitem>
</varlistentry>
<varlistentry>
- <term>SIGWINCH</term>
+ <term><constant>SIGWINCH</constant></term>
<listitem><para>When this signal is
received the systemd system manager
</varlistentry>
<varlistentry>
- <term>SIGPWR</term>
+ <term><constant>SIGPWR</constant></term>
<listitem><para>When this signal is
received the systemd manager
</varlistentry>
<varlistentry>
- <term>SIGUSR1</term>
+ <term><constant>SIGUSR1</constant></term>
<listitem><para>When this signal is
received the systemd manager will try
</varlistentry>
<varlistentry>
- <term>SIGUSR2</term>
+ <term><constant>SIGUSR2</constant></term>
<listitem><para>When this signal is
received the systemd manager will log
</varlistentry>
<varlistentry>
- <term>SIGHUP</term>
+ <term><constant>SIGHUP</constant></term>
<listitem><para>Reloads the complete
daemon configuration. This is mostly
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+0</term>
+ <term><constant>SIGRTMIN+0</constant></term>
<listitem><para>Enters default mode, starts the
<filename>default.target</filename>
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+1</term>
+ <term><constant>SIGRTMIN+1</constant></term>
<listitem><para>Enters rescue mode,
starts the
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+2</term>
+ <term><constant>SIGRTMIN+2</constant></term>
<listitem><para>Enters emergency mode,
starts the
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+3</term>
+ <term><constant>SIGRTMIN+3</constant></term>
<listitem><para>Halts the machine,
starts the
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+4</term>
+ <term><constant>SIGRTMIN+4</constant></term>
<listitem><para>Powers off the machine,
starts the
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+5</term>
+ <term><constant>SIGRTMIN+5</constant></term>
<listitem><para>Reboots the machine,
starts the
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+6</term>
+ <term><constant>SIGRTMIN+6</constant></term>
<listitem><para>Reboots the machine via kexec,
starts the
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+13</term>
+ <term><constant>SIGRTMIN+13</constant></term>
<listitem><para>Immediately halts the machine.</para></listitem>
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+14</term>
+ <term><constant>SIGRTMIN+14</constant></term>
<listitem><para>Immediately powers off the machine.</para></listitem>
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+15</term>
+ <term><constant>SIGRTMIN+15</constant></term>
<listitem><para>Immediately reboots the machine.</para></listitem>
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+16</term>
+ <term><constant>SIGRTMIN+16</constant></term>
<listitem><para>Immediately reboots the machine with kexec.</para></listitem>
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+20</term>
+ <term><constant>SIGRTMIN+20</constant></term>
<listitem><para>Enables display of
status messages on the console, as
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+21</term>
+ <term><constant>SIGRTMIN+21</constant></term>
<listitem><para>Disables display of
status messages on the console, as
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+22</term>
- <term>SIGRTMIN+23</term>
+ <term><constant>SIGRTMIN+22</constant></term>
+ <term><constant>SIGRTMIN+23</constant></term>
<listitem><para>Sets the log level to
<literal>debug</literal>
(or <literal>info</literal> on
- <literal>SIGRTMIN+23</literal>), as
+ <constant>SIGRTMIN+23</constant>), as
controlled via
<varname>systemd.log_level=debug</varname>
(or <varname>systemd.log_level=info</varname>
- on <literal>SIGRTMIN+23</literal>) on
+ on <constant>SIGRTMIN+23</constant>) on
the kernel command
line.</para></listitem>
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+24</term>
+ <term><constant>SIGRTMIN+24</constant></term>
<listitem><para>Immediately exits the
manager (only available for --user
</varlistentry>
<varlistentry>
- <term>SIGRTMIN+26</term>
- <term>SIGRTMIN+27</term>
- <term>SIGRTMIN+28</term>
- <term>SIGRTMIN+29</term>
+ <term><constant>SIGRTMIN+26</constant></term>
+ <term><constant>SIGRTMIN+27</constant></term>
+ <term><constant>SIGRTMIN+28</constant></term>
+ <term><constant>SIGRTMIN+29</constant></term>
<listitem><para>Sets the log level to
<literal>journal-or-kmsg</literal>
(or <literal>console</literal> on
- <literal>SIGRTMIN+27</literal>,
+ <constant>SIGRTMIN+27</constant>,
<literal>kmsg</literal> on
- <literal>SIGRTMIN+28</literal>,
+ <constant>SIGRTMIN+28</constant>,
or <literal>syslog-or-kmsg</literal>
- on <literal>SIGRTMIN+29</literal>), as
+ on <constant>SIGRTMIN+29</constant>), as
controlled via
<varname>systemd.log_target=journal-or-kmsg</varname>
(or <varname>systemd.log_target=console</varname>
- on <literal>SIGRTMIN+27</literal>,
+ on <constant>SIGRTMIN+27</constant>,
<varname>systemd.log_target=kmsg</varname>
- on <literal>SIGRTMIN+28</literal>,
+ on <constant>SIGRTMIN+28</constant>,
or
<varname>systemd.log_target=syslog-or-kmsg</varname>
- on <literal>SIGRTMIN+29</literal>) on
+ on <constant>SIGRTMIN+29</constant>) on
the kernel command
line.</para></listitem>
</varlistentry>
argument. If positive systemd
activates the specified virtual
terminal when it crashes. Defaults to
- <literal>-1</literal>.</para></listitem>
+ <constant>-1</constant>.</para></listitem>
</varlistentry>
<varlistentry>
<varlistentry>
<term><varname>quiet</varname></term>
- <listitem><para>If passed turns off
+ <listitem><para>Turn off
status output at boot, much like
<varname>systemd.show_status=false</varname>
would. Note that this option is also
read by the kernel itself and disables
- kernel log output to the
- kernel. Passing this option hence
- turns off the usual output from both
- the system manager and the
+ kernel log output. Passing this option
+ hence turns off the usual output from
+ both the system manager and the kernel.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>debug</varname></term>
+
+ <listitem><para>Turn on debugging
+ output. This is equivalent to
+ <varname>systemd.log_level=debug</varname>.
+ Note that this option is also read by
+ the kernel itself and enables kernel
+ debug output. Passing this option
+ hence turns on the debug output from
+ both the system manager and the
kernel.</para></listitem>
</varlistentry>
<listitem><para>Daemon status
notification socket. This is an
- AF_UNIX datagram socket and is used to
+ <constant>AF_UNIX</constant> datagram socket and is used to
implement the daemon notification
logic as implemented by
<citerefentry><refentrytitle>sd_notify</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para></listitem>
<listitem><para>Used internally by the
<citerefentry><refentrytitle>shutdown</refentrytitle><manvolnum>8</manvolnum></citerefentry>
tool to implement delayed
- shutdowns. This is an AF_UNIX datagram
+ shutdowns. This is an <constant>AF_UNIX</constant> datagram
socket.</para></listitem>
</varlistentry>
communication channel between
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
and the systemd process. This is an
- AF_UNIX stream socket. This interface
+ <constant>AF_UNIX</constant> stream socket. This interface
is private to systemd and should not
be used in external
projects.</para></listitem>
~ianmdlvl / elogind.git / blobdiff