<refnamediv>
<refname>systemctl</refname>
- <refpurpose>Control the systemd system and session manager</refpurpose>
+ <refpurpose>Control the systemd system and service manager</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><command>systemctl</command> may be used to
introspect and control the state of the
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- system and session manager.</para>
+ system and service manager.</para>
</refsect1>
<refsect1>
text and exits.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><option>--version</option></term>
+
+ <listitem><para>Prints a short version
+ string and exits.</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><option>--type=</option></term>
<term><option>-t</option></term>
they are set or not.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><option>--failed</option></term>
+
+ <listitem><para>When listing units,
+ show only failed units. Do not confuse
+ with
+ <option>--fail</option>.</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><option>--full</option></term>
unfinished job, fail the command. If
this is not specified the requested
operation will replace the pending job,
- if necessary.</para></listitem>
+ if necessary. Do not confuse
+ with
+ <option>--failed</option>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--ignore-dependencies</option></term>
+
+ <listitem><para>When enqueuing a new
+ job ignore all its dependencies and
+ execute it immediately. If passed no
+ required units of the unit passed will
+ be pulled in, and no ordering
+ dependencies will be honoured. This is
+ mostly a debugging and rescue tool for
+ the administrator and should not be
+ used by
+ applications.</para></listitem>
</varlistentry>
<varlistentry>
<listitem><para>Suppress output to
STDOUT in
<command>snapshot</command>,
- <command>check</command>,
+ <command>is-active</command>,
<command>enable</command> and
<command>disable</command>.</para></listitem>
</varlistentry>
argument it is only verified and
enqueued.</para></listitem> </varlistentry>
+ <varlistentry>
+ <term><option>--no-pager</option></term>
+
+ <listitem><para>Do not pipe output into a
+ pager.</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><option>--system</option></term>
</varlistentry>
<varlistentry>
- <term><option>--session</option></term>
+ <term><option>--user</option></term>
<listitem><para>Talk to the systemd
- session manager of the calling user.</para></listitem>
+ manager of the calling user.</para></listitem>
</varlistentry>
<varlistentry>
<listitem><para>When used with
<command>enable</command> and
<command>disable</command>, operate on the
- global session configuĊation
+ global user configuration
directory, thus enabling or disabling
a unit file globally for all future
- sessions of all users.</para></listitem>
+ logins of all users.</para></listitem>
</varlistentry>
<varlistentry>
changes.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><option>--no-ask-password</option></term>
+
+ <listitem><para>When used with
+ <command>start</command> and related
+ commands, disables asking for
+ passwords. Background services may
+ require input of a password or
+ passphrase string, for example to
+ unlock system hard disks or
+ cryptographic certificates. Unless
+ this option is specified and the
+ command is invoked from a terminal
+ <command>systemctl</command> will
+ query the user on the terminal for the
+ necessary secrets. Use this option to
+ switch this behavior off. In this
+ case the password must be supplied by
+ some other means (for example
+ graphical password agents) or the
+ service might fail.</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><option>--kill-mode=</option></term>
<command>kill</command>, choose the
mode how to kill the selected
processes. Must be one of
- <option>control-group</option>,
- <option>process-group</option> or
+ <option>control-group</option> or
<option>process</option> to select
whether to kill the entire control
- group, the process group or only the
- selected process itself. If ommitted
- defaults to
+ group or only the selected process
+ itself. If omitted defaults to
<option>control-group</option> if
<option>--kill-who=all</option> is
set, or <option>process</option>
<option>all</option> to select whether
to kill only the main process of the
unit, the control process or all
- processes of the unit. If ommitted
+ processes of the unit. If omitted
defaults to
<option>all</option>.</para></listitem>
</varlistentry>
<varlistentry>
- <term><option>---signal=</option></term>
+ <term><option>--signal=</option></term>
<term><option>-s</option></term>
<listitem><para>When used with
<command>kill</command>, choose which
signal to send to selected
processes. Must be one of the well
- know signal specifiers such as
+ known signal specifiers such as
SIGTERM, SIGINT or SIGSTOP. If
- ommitted defaults to
+ omitted defaults to
<option>SIGTERM</option>.</para></listitem>
</varlistentry>
file that shall be
disabled.</para></listitem>
</varlistentry>
+
+ <varlistentry>
+ <term><option>-H</option></term>
+ <term><option>--host</option></term>
+
+ <listitem><para>Execute operation
+ remotely. Specify a hostname, or
+ username and hostname separated by @,
+ to connect to. This will use SSH to
+ talk to the remote systemd
+ instance.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-P</option></term>
+ <term><option>--privileged</option></term>
+
+ <listitem><para>Acquire privileges via
+ PolicyKit before executing the
+ operation.</para></listitem>
+ </varlistentry>
</variablelist>
<para>The following commands are understood:</para>
<listitem><para>Restart one or more
units specified on the command
- line. If the units are not running yet
- the operation will
- fail.</para></listitem>
+ line if the units are running. Do
+ nothing if units are not running.
+ Note that for compatibility
+ with Red Hat init scripts
+ <command>condrestart</command> is
+ equivalent to this command.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>reload-or-restart [NAME...]</command></term>
+
+ <listitem><para>Reload one or more
+ units if they support it. If not,
+ restart them instead. If the units
+ are not running yet they will be
+ started.</para></listitem>
+ </varlistentry>
+ <varlistentry>
<term><command>reload-or-try-restart [NAME...]</command></term>
<listitem><para>Reload one or more
units if they support it. If not,
- restart them instead. Note that for
- compatibility with SysV and Red Hat
- init scripts
- <command>force-reload</command> and
- <command>condrestart</command> may be
- used as equivalent commands to
- <command>reload-or-try-restart</command>.</para></listitem>
+ restart them instead. Do nothing if
+ the units are not running. Note that
+ for compatibility with SysV init
+ scripts
+ <command>force-reload</command> is
+ equivalent to this
+ command.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>isolate [NAME]</command></term>
<term><command>is-active [NAME...]</command></term>
<listitem><para>Check whether any of
- the specified units is active
+ the specified units are active
(i.e. running). Returns an exit code
0 if at least one is active, non-zero
otherwise. Unless
administrator is free to make
additional changes manually, by
placing or removing symlinks in the
- directory. This is particular useful
+ directory. This is particularly useful
to create configurations that deviate
from the suggested default
installation. In this case the
<para>Depending on whether
<option>--system</option>,
- <option>--session</option> or
+ <option>--user</option> or
<option>--global</option> is specified
this enables the unit for the system,
- for sessions of the calling user only
- or for all future session of all
+ for the calling user only
+ or for all future logins of all
users. Note that in the latter case no
systemd daemon configuration is
reloaded.</para>
<option>--quiet</option>.</para>
</listitem>
- <para>This command honours
+ <para>This command honors
<option>--system</option>,
- <option>--session</option>,
+ <option>--user</option>,
<option>--global</option> in a similar
way as
<command>enable</command>.</para>
<listitem><para>Cancel one or more
jobs specified on the command line by
their numeric job
- IDs. If not job id is specified cancels all jobs that are pending.</para></listitem>
+ IDs. If no job id is specified, cancel all pending jobs.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>monitor</command></term>
<para>A snapshot refers to a saved
state of the systemd manager. It is
- implemented itself as unit that is
+ implemented itself as a unit that is
generated dynamically with this
command and has dependencies on all
units active at the time. At a later
configuration will stay
accessible.</para></listitem>
</varlistentry>
- <varlistentry>
- <term><command>daemon-exit</command></term>
-
- <listitem><para>Ask the systemd
- manager to quit. This is only
- supported for session managers
- (i.e. in conjunction with the
- <option>--session</option> option) and
- will fail otherwise.</para></listitem>
- </varlistentry>
<varlistentry>
<term><command>show-environment</command></term>
is only removed if it has the
specified value.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><command>default</command></term>
+ <listitem><para>Enter default
+ mode. This is mostly equivalent to
+ <command>start
+ default.target</command>.</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>rescue</command></term>
+
+ <listitem><para>Enter rescue
+ mode. This is mostly equivalent to
+ <command>isolate
+ rescue.target</command> but also
+ prints a wall message to all
+ users.</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>emergency</command></term>
+
+ <listitem><para>Enter emergency
+ mode. This is mostly equivalent to
+ <command>isolate
+ emergency.target</command> but also
+ prints a wall message to all
+ users.</para></listitem>
+ </varlistentry>
<varlistentry>
<term><command>halt</command></term>
system. This is mostly equivalent to
<command>start halt.target</command>
but also prints a wall message to all
- users.</para></listitem>
+ users. If
+ combined with <option>--force</option>
+ shutdown of all running services is
+ skipped, however all processes are killed
+ and all file systems are unmounted or
+ mounted read-only, immediately
+ followed by the
+ system halt.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>poweroff</command></term>
equivalent to <command>start
poweroff.target</command> but also
prints a wall message to all
- users.</para></listitem>
+ users. If
+ combined with <option>--force</option>
+ shutdown of all running services is
+ skipped, however all processes are killed
+ and all file systems are unmounted or
+ mounted read-only, immediately
+ followed by the
+ powering off.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>reboot</command></term>
equivalent to <command>start
reboot.target</command> but also
prints a wall message to all
- users.</para></listitem>
- </varlistentry>
- <varlistentry>
- <term><command>default</command></term>
-
- <listitem><para>Enter default
- mode. This is mostly equivalent to
- <command>start
- default.target</command>.</para></listitem>
+ users. If
+ combined with <option>--force</option>
+ shutdown of all running services is
+ skipped, however all processes are killed
+ and all file systems are unmounted or
+ mounted read-only, immediately
+ followed by the
+ reboot.</para></listitem>
</varlistentry>
<varlistentry>
- <term><command>rescue</command></term>
+ <term><command>kexec</command></term>
- <listitem><para>Enter rescue
- mode. This is mostly equivalent to
- <command>isolate
- rescue.target</command> but also
- prints a wall message to all
- users.</para></listitem>
+ <listitem><para>Shut down and reboot
+ the system via kexec. This is mostly
+ equivalent to <command>start
+ kexec.target</command> but also prints
+ a wall message to all users. If
+ combined with <option>--force</option>
+ shutdown of all running services is
+ skipped, however all processes are killed
+ and all file systems are unmounted or
+ mounted read-only, immediately
+ followed by the
+ reboot.</para></listitem>
</varlistentry>
<varlistentry>
- <term><command>emergency</command></term>
+ <term><command>exit</command></term>
- <listitem><para>Enter emergency
- mode. This is mostly equivalent to
- <command>isolate
- emergency.target</command> but also
- prints a wall message to all
- users.</para></listitem>
+ <listitem><para>Ask the systemd
+ manager to quit. This is only
+ supported for user service managers
+ (i.e. in conjunction with the
+ <option>--user</option> option) and
+ will fail otherwise.</para></listitem>
</varlistentry>
</variablelist>
code otherwise.</para>
</refsect1>
+ <refsect1>
+ <title>Environment</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><varname>$SYSTEMD_PAGER</varname></term>
+ <listitem><para>Pager to use when
+ <option>--no-pager</option> is not given;
+ overrides <varname>$PAGER</varname>. Setting
+ this to an empty string or the value
+ <literal>cat</literal> is equivalent to passing
+ <option>--no-pager</option>.</para></listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
<refsect1>
<title>See Also</title>
<para>
~ianmdlvl / elogind.git / blobdiff