<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 @,
to connect to. This will use SSH to
system clock is synchronized from the
RTC again, taking the new setting into
account. Otherwise the RTC is
- synchonized from the system
+ 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
+ time zones can be listed with
<command>list-timezones</command>. If
the RTC is configured to be in the
local time this will also update the
<listitem><para>List available time
zones, one per line. Entries from the
- list may selected as the system
- timezone with
+ list can be set as the system
+ time zone with
<command>set-timezone</command>.</para></listitem>
</varlistentry>
<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
+ time zone is not fully supported and
will create various problems with time
zone changes and daylight saving
adjustments. If at all possible use
</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>