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diff --git a/man/systemd.time.xml b/man/systemd.time.xml deleted file mode 100644 index 47229b4a4e..0000000000 --- a/man/systemd.time.xml +++ /dev/null @@ -1,310 +0,0 @@ -<?xml version='1.0'?> <!--*-nxml-*--> -<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" - "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> - -<!-- - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. ---> - -<refentry id="systemd.time"> - - <refentryinfo> - <title>systemd.time</title> - <productname>systemd</productname> - - <authorgroup> - <author> - <contrib>Developer</contrib> - <firstname>Lennart</firstname> - <surname>Poettering</surname> - <email>lennart@poettering.net</email> - </author> - </authorgroup> - </refentryinfo> - - <refmeta> - <refentrytitle>systemd.time</refentrytitle> - <manvolnum>7</manvolnum> - </refmeta> - - <refnamediv> - <refname>systemd.time</refname> - <refpurpose>Time and date specifications</refpurpose> - </refnamediv> - - <refsect1> - <title>Description</title> - - <para>In systemd, timestamps, time spans, and calendar events are - displayed and may be specified in closely related syntaxes.</para> - </refsect1> - - <refsect1> - <title>Displaying Time Spans</title> - - <para>Time spans refer to time durations. On display, systemd will present time spans as a space-separated series - of time values each suffixed by a time unit. Example:</para> - - <programlisting>2h 30min</programlisting> - - <para>All specified time values are meant to be added up. The above hence refers to 150 minutes. Display is - locale-independent, only English names for the time units are used.</para> - </refsect1> - - <refsect1> - <title>Parsing Time Spans</title> - - <para>When parsing, systemd will accept the same time span syntax. - Separating spaces may be omitted. The following time units are - understood:</para> - - <itemizedlist> - <listitem><para>usec, us</para></listitem> - <listitem><para>msec, ms</para></listitem> - <listitem><para>seconds, second, sec, s</para></listitem> - <listitem><para>minutes, minute, min, m</para></listitem> - <listitem><para>hours, hour, hr, h</para></listitem> - <listitem><para>days, day, d</para></listitem> - <listitem><para>weeks, week, w</para></listitem> - <listitem><para>months, month, M (defined as 30.44 days)</para></listitem> - <listitem><para>years, year, y (defined as 365.25 days)</para></listitem> - </itemizedlist> - - <para>If no time unit is specified, generally seconds are assumed, but some exceptions exist and are marked as - such. In a few cases <literal>ns</literal>, <literal>nsec</literal> is accepted too, where the granularity of the - time span permits this. Parsing is generally locale-independent, non-English names for the time units are not - accepted.</para> - - <para>Examples for valid time span specifications:</para> - - <programlisting>2 h -2hours -48hr -1y 12month -55s500ms -300ms20s 5day</programlisting> - </refsect1> - - <refsect1> - <title>Displaying Timestamps</title> - - <para>Timestamps refer to specific, unique points in time. On - display, systemd will format these in the local timezone as - follows:</para> - - <programlisting>Fri 2012-11-23 23:02:15 CET</programlisting> - - <para>The weekday is printed in the abbreviated English language form. The formatting is locale-independent.</para> - - <para>In some cases timestamps are shown in the UTC timezone instead of the local timezone, which is indicated via - the <literal>UTC</literal> timezone specifier in the output.</para> - - <para>In some cases timestamps are shown with microsecond granularity. In this case the sub-second remainder is - separated by a full stop from the seconds component.</para> - </refsect1> - - <refsect1> - <title>Parsing Timestamps</title> - - <para>When parsing, systemd will accept a similar syntax, but expects no timezone specification, unless it is given - as the literal string <literal>UTC</literal> (for the UTC timezone) or is specified to be the locally configured - timezone. Other timezones than the local and UTC are not supported. The weekday specification is optional, but when - the weekday is specified, it must either be in the abbreviated (<literal>Wed</literal>) or non-abbreviated - (<literal>Wednesday</literal>) English language form (case does not matter), and is not subject to the locale - choice of the user. Either the date, or the time part may be omitted, in which case the current date or 00:00:00, - respectively, is assumed. The seconds component of the time may also be omitted, in which case ":00" is - assumed. Year numbers may be specified in full or may be abbreviated (omitting the century).</para> - - <para>A timestamp is considered invalid if a weekday is specified and the date does not match the specified day of - the week.</para> - - <para>When parsing, systemd will also accept a few special - placeholders instead of timestamps: <literal>now</literal> may be - used to refer to the current time (or of the invocation of the - command that is currently executed). <literal>today</literal>, - <literal>yesterday</literal>, and <literal>tomorrow</literal> refer to - 00:00:00 of the current day, the day before, or the next day, - respectively.</para> - - <para>When parsing, systemd will also accept relative time - specifications. A time span (see above) that is prefixed with - <literal>+</literal> is evaluated to the current time plus the - specified time span. Correspondingly, a time span that is prefixed - with <literal>-</literal> is evaluated to the current time minus - the specified time span. Instead of prefixing the time span with - <literal>+</literal> or <literal>-</literal>, it may also be - suffixed with a space and the word <literal>left</literal> or - <literal>ago</literal>.</para> - - <para>Finally, a timespan prefixed with <literal>@</literal> is - evaluated relative to the UNIX time epoch 1st Jan, 1970, - 00:00.</para> - - <para>Examples for valid timestamps and their normalized form - (assuming the current time was 2012-11-23 18:15:22 and the timezone - was UTC+8, for example TZ=Asia/Shanghai):</para> - - <programlisting>Fri 2012-11-23 11:12:13 → Fri 2012-11-23 11:12:13 - 2012-11-23 11:12:13 → Fri 2012-11-23 11:12:13 -2012-11-23 11:12:13 UTC → Fri 2012-11-23 19:12:13 - 2012-11-23 → Fri 2012-11-23 00:00:00 - 12-11-23 → Fri 2012-11-23 00:00:00 - 11:12:13 → Fri 2012-11-23 11:12:13 - 11:12 → Fri 2012-11-23 11:12:00 - now → Fri 2012-11-23 18:15:22 - today → Fri 2012-11-23 00:00:00 - today UTC → Fri 2012-11-23 16:00:00 - yesterday → Fri 2012-11-22 00:00:00 - tomorrow → Fri 2012-11-24 00:00:00 - +3h30min → Fri 2012-11-23 21:45:22 - -5s → Fri 2012-11-23 18:15:17 - 11min ago → Fri 2012-11-23 18:04:22 - @1395716396 → Tue 2014-03-25 03:59:56</programlisting> - - <para>Note that timestamps displayed by remote systems with a non-matching timezone are usually not parsable - locally, as the timezone component is not understood (unless it happens to be <literal>UTC</literal>).</para> - - <para>Timestamps may also be specified with microsecond granularity. The sub-second remainder is expected separated - by a full stop from the seconds component. Example:</para> - - <programlisting>2014-03-25 03:59:56.654563</programlisting> - - <para>In some cases, systemd will display a relative timestamp (relative to the current time, or the time of - invocation of the command) instead of or in addition to an absolute timestamp as described above. A relative - timestamp is formatted as follows:</para> - - <programlisting>2 months 5 days ago</programlisting> - - <para>Note that a relative timestamp is also accepted where a timestamp is expected (see above).</para> - </refsect1> - - <refsect1> - <title>Calendar Events</title> - - <para>Calendar events may be used to refer to one or more points - in time in a single expression. They form a superset of the - absolute timestamps explained above:</para> - - <programlisting>Thu,Fri 2012-*-1,5 11:12:13</programlisting> - - <para>The above refers to 11:12:13 of the first or fifth day of - any month of the year 2012, but only if that day is a Thursday or - Friday.</para> - - <para>The weekday specification is optional. If specified, it - should consist of one or more English language weekday names, - either in the abbreviated (Wed) or non-abbreviated (Wednesday) - form (case does not matter), separated by commas. Specifying two - weekdays separated by <literal>..</literal> refers to a range of - continuous weekdays. <literal>,</literal> and <literal>..</literal> - may be combined freely.</para> - - <para>In the date and time specifications, any component may be - specified as <literal>*</literal> in which case any value will - match. Alternatively, each component can be specified as a list of - values separated by commas. Values may also be suffixed with - <literal>/</literal> and a repetition value, which indicates that - the value itself and the value plus all multiples of the repetition value - are matched. Each component may also contain a range of values - separated by <literal>..</literal>.</para> - - <para>The seconds component may contain decimal fractions both in - the value and the repetition. All fractions are rounded to 6 - decimal places.</para> - - <para>Either time or date specification may be omitted, in which - case the current day and 00:00:00 is implied, respectively. If the - second component is not specified, <literal>:00</literal> is - assumed.</para> - - <para>A timezone specification is not expected, unless it is given as the literal string <literal>UTC</literal>, or - the local timezone, similar to the supported syntax of timestamps (see above). Non-local timezones except for UTC - are not supported.</para> - - <para>The special expressions - <literal>minutely</literal>, - <literal>hourly</literal>, <literal>daily</literal>, - <literal>monthly</literal>, <literal>weekly</literal>, - <literal>yearly</literal>, - <literal>quarterly</literal>, - <literal>semiannually</literal> may be used as - calendar events which refer to - <literal>*-*-* *:*:00</literal>, - <literal>*-*-* *:00:00</literal>, - <literal>*-*-* 00:00:00</literal>, - <literal>*-*-01 00:00:00</literal>, - <literal>Mon *-*-* 00:00:00</literal>, - <literal>*-01-01 00:00:00</literal>, - <literal>*-01,04,07,10-01 00:00:00</literal> and - <literal>*-01,07-01 00:00:00</literal>, respectively. - </para> - - <para>Examples for valid timestamps and their - normalized form:</para> - -<programlisting> Sat,Thu,Mon..Wed,Sat..Sun → Mon..Thu,Sat,Sun *-*-* 00:00:00 - Mon,Sun 12-*-* 2,1:23 → Mon,Sun 2012-*-* 01,02:23:00 - Wed *-1 → Wed *-*-01 00:00:00 - Wed..Wed,Wed *-1 → Wed *-*-01 00:00:00 - Wed, 17:48 → Wed *-*-* 17:48:00 -Wed..Sat,Tue 12-10-15 1:2:3 → Tue..Sat 2012-10-15 01:02:03 - *-*-7 0:0:0 → *-*-07 00:00:00 - 10-15 → *-10-15 00:00:00 - monday *-12-* 17:00 → Mon *-12-* 17:00:00 - Mon,Fri *-*-3,1,2 *:30:45 → Mon,Fri *-*-01,02,03 *:30:45 - 12,14,13,12:20,10,30 → *-*-* 12,13,14:10,20,30:00 - 12..14:10,20,30 → *-*-* 12,13,14:10,20,30:00 - mon,fri *-1/2-1,3 *:30:45 → Mon,Fri *-01/2-01,03 *:30:45 - 03-05 08:05:40 → *-03-05 08:05:40 - 08:05:40 → *-*-* 08:05:40 - 05:40 → *-*-* 05:40:00 - Sat,Sun 12-05 08:05:40 → Sat,Sun *-12-05 08:05:40 - Sat,Sun 08:05:40 → Sat,Sun *-*-* 08:05:40 - 2003-03-05 05:40 → 2003-03-05 05:40:00 - 05:40:23.4200004/3.1700005 → 05:40:23.420000/3.170001 - 2003-02..04-05 → 2003-02,03,04-05 00:00:00 - 2003-03-05 05:40 UTC → 2003-03-05 05:40:00 UTC - 2003-03-05 → 2003-03-05 00:00:00 - 03-05 → *-03-05 00:00:00 - hourly → *-*-* *:00:00 - daily → *-*-* 00:00:00 - daily UTC → *-*-* 00:00:00 UTC - monthly → *-*-01 00:00:00 - weekly → Mon *-*-* 00:00:00 - yearly → *-01-01 00:00:00 - annually → *-01-01 00:00:00 - *:2/3 → *-*-* *:02/3:00</programlisting> - - <para>Calendar events are used by timer units, see - <citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry> - for details.</para> - - </refsect1> - - <refsect1> - <title>See Also</title> - <para> - <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry> - </para> - </refsect1> - -</refentry> |