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man: update timedatectl and systemd-timedated

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Yu Watanabe 2018-04-17 13:57:27 +09:00
parent f567f086d2
commit 326208e082
2 changed files with 34 additions and 30 deletions
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23
man/systemd-timedated.service.xml
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@ -61,13 +61,34 @@
<filename>systemd-timedated</filename> provides.</para>
</refsect1>
<refsect1>
<title>Environment</title>
<variablelist class='environment-variables'>
<varlistentry>
<term><varname>$SYSTEMD_TIMEDATED_NTP_SERVICES</varname></term>
<listitem><para>Colon-separated list of unit names of NTP client services.
If not set, then
<citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
is used. See the entries of NTP related commands of
<citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
for details about this.</para>
<para>Example:
<programlisting>SYSTEMD_TIMEDATED_NTP_SERVICES=ntpd.service:chronyd.service:systemd-timesyncd.service</programlisting>
</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry project='man-pages'><refentrytitle>hwclock</refentrytitle><manvolnum>8</manvolnum></citerefentry>
<citerefentry project='man-pages'><refentrytitle>hwclock</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-timesyncd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>

41
man/timedatectl.xml
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@ -156,28 +156,11 @@
<varlistentry>
<term><command>set-ntp [BOOL]</command></term>
<listitem><para>Takes a boolean argument. Controls whether
network time synchronization is active and enabled (if
available). This enables and starts, or disables and stops the
<filename>systemd-timesyncd.service</filename> unit. It does
not affect the state of any other, unrelated network time
synchronization services that might be installed on the
system. This command is hence mostly equivalent to:
<command>systemctl enable --now
systemd-timesyncd.service</command> and <command>systemctl
disable --now systemd-timesyncd.service</command>, but is
protected by a different access policy.</para>
<para>Note that even if time synchronization is turned off
with this command, another unrelated system service might
still synchronize the clock with the network. Also note that,
strictly speaking,
<filename>systemd-timesyncd.service</filename> does more than
just network time synchronization, as it ensures a monotonic
clock on systems without RTC even if no network is
available. See
<citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
for details about this.</para></listitem>
<listitem><para>Takes a boolean argument. Controls whether network time synchronization is active
and enabled (if available). If the argument is true, this enables and starts the first existed
service listed in the environment variable <varname>$SYSTEMD_TIMEDATED_NTP_SERVICES</varname>
of <filename>systemd-timedated.service</filename>. If the argument is false, then this disables and
stops the all services listed in <varname>$SYSTEMD_TIMEDATED_NTP_SERVICES</varname>.</para></listitem>
</varlistentry>
</variablelist>
@ -197,13 +180,13 @@
<title>Examples</title>
<para>Show current settings:
<programlisting>$ timedatectl
Local time: Thu 2017-09-21 16:08:56 CEST
Universal time: Thu 2017-09-21 14:08:56 UTC
RTC time: Thu 2017-09-21 14:08:56
Time zone: Europe/Warsaw (CEST, +0200)
System clock synchronized: yes
systemd-timesyncd.service active: yes
RTC in local TZ: no</programlisting>
Local time: Thu 2017-09-21 16:08:56 CEST
Universal time: Thu 2017-09-21 14:08:56 UTC
RTC time: Thu 2017-09-21 14:08:56
Time zone: Europe/Warsaw (CEST, +0200)
System clock synchronized: yes
NTP service: active
RTC in local TZ: no</programlisting>
</para>
<para>Enable network time synchronization: