along with systemd; If not, see <http://www.gnu.org/licenses/>.
-->
-<refentry id="timedatectl">
+<refentry id="timedatectl" conditional='ENABLE_TIMEDATED'>
<refentryinfo>
<title>timedatectl</title>
<variablelist>
<varlistentry>
- <term><option>--help</option></term>
<term><option>-h</option></term>
+ <term><option>--help</option></term>
<listitem><para>Prints a short help
text and exits.</para></listitem>
<varlistentry>
<term><option>--no-ask-password</option></term>
- <listitem><para>Don't query the user
+ <listitem><para>Do not query the user
for authentication for privileged
operations.</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>
+
<varlistentry>
<term><option>-H</option></term>
<term><option>--host</option></term>
- <listitem><para>Execute operation
+ <listitem><para>Execute the operation
remotely. Specify a hostname, or
- username and hostname separated by @,
+ username and hostname separated by <literal>@</literal>,
to connect to. This will use SSH to
talk to a remote
system.</para></listitem>
</varlistentry>
<varlistentry>
- <term><option>--fix-system</option></term>
+ <term><option>--adjust-system-clock</option></term>
<listitem><para>If
<command>set-local-rtc</command> is
- invoked and this option is passed the
+ invoked and this option is passed, the
system clock is synchronized from the
RTC again, taking the new setting into
- account. Otherwise the RTC is
- synchonized from the system
+ account. Otherwise, the RTC is
+ synchronized from the system
clock.</para></listitem>
</varlistentry>
</variablelist>
<listitem><para>Set the system time
zone to the specified value. Available
- time zones my be listed with
+ timezones can be listed with
<command>list-timezones</command>. If
the RTC is configured to be in the
- local time this will also update the
- RTC time.</para></listitem>
+ local time, this will also update the
+ RTC time. This call will alter the
+ <filename>/etc/localtime</filename>
+ symlink. See
+ <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for more
+ information.</para></listitem>
</varlistentry>
<varlistentry>
<listitem><para>List available time
zones, one per line. Entries from the
- list may selected as the system
+ list can be set as the system
timezone with
<command>set-timezone</command>.</para></listitem>
</varlistentry>
<term><command>set-local-rtc [BOOL]</command></term>
<listitem><para>Takes a boolean
- argument. If <literal>0</literal> the
+ argument. If <literal>0</literal>, the
system is configured to maintain the
- RTC in universal time, if
- <literal>1</literal> it will maintain
+ RTC in universal time. If
+ <literal>1</literal>, it will maintain
the RTC in local time instead. Note
that maintaining the RTC in the local
- timezone is is not fully supported and
+ timezone is not fully supported and
will create various problems with time
zone changes and daylight saving
- adjustments. If at all possible use
- RTC in UTC. Note that invoking this
+ adjustments. If at all possible, keep the
+ RTC in UTC mode. Note that invoking this
will also synchronize the RTC from the
system clock, unless
- <option>--fix-system</option> is
+ <option>--adjust-system-clock</option> is
passed (see above). This command will
change the 3rd line of
<filename>/etc/adjtime</filename>, as
<refsect1>
<title>Environment</title>
- <variablelist>
+ <variablelist class='environment-variables'>
<varlistentry>
<term><varname>$SYSTEMD_PAGER</varname></term>
<listitem><para>Pager to use when
</variablelist>
</refsect1>
+ <refsect1>
+ <title>Examples</title>
+ <para>Show current settings:
+ <programlisting>
+$ timedatectl
+ Local time: Fri, 2012-11-02 09:26:46 CET
+ Universal time: Fri, 2012-11-02 08:26:46 UTC
+ RTC time: Fri, 2012-11-02 08:26:45
+ Timezone: Europe/Warsaw
+ UTC offset: +0100
+ NTP enabled: no
+NTP synchronized: no
+ RTC in local TZ: no
+ DST active: no
+ Last DST change: CEST → CET, DST became inactive
+ Sun, 2012-10-28 02:59:59 CEST
+ Sun, 2012-10-28 02:00:00 CET
+ Next DST change: CET → CEST, DST will become active
+ the clock will jump one hour forward
+ Sun, 2013-03-31 01:59:59 CET
+ Sun, 2013-03-31 03:00:00 CEST
+ </programlisting>
+ </para>
+
+ <para>Enable an NTP daemon (chronyd):
+ <programlisting>
+$ timedatectl set-ntp true
+==== AUTHENTICATING FOR org.freedesktop.timedate1.set-ntp ===
+Authentication is required to control whether network time synchronization shall be enabled.
+Authenticating as: user
+Password: ********
+==== AUTHENTICATION COMPLETE ===
+ </programlisting>
+
+ <programlisting>
+$ systemctl status chronyd.service
+chronyd.service - NTP client/server
+ Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled)
+ Active: active (running) since Fri, 2012-11-02 09:36:25 CET; 5s ago
+...
+ </programlisting>
+ </para>
+ </refsect1>
+
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>hwclock</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>date</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-timedated.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
~ianmdlvl / elogind.git / blobdiff