<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
+ 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>, it
- may also be suffixed with a space and the word
+ 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):</para>
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</programlisting>
+ 11min ago → Fri 2012-11-23 18:04:22
+ @1395716396 → Tue 2014-03-25 03:59:56</programlisting>
<para>Note that timestamps printed by systemd will not
be parsed correctly by systemd, as the timezone
* tomorrow (time is set to 00:00:00)
* +5min
* -5days
+ * @2147483647 (seconds since epoch)
*
*/
goto finish;
} else if (t[0] == '+') {
-
r = parse_sec(t+1, &plus);
if (r < 0)
return r;
goto finish;
- } else if (t[0] == '-') {
+ } else if (t[0] == '-') {
r = parse_sec(t+1, &minus);
if (r < 0)
return r;
goto finish;
- } else if (endswith(t, " ago")) {
+ } else if (t[0] == '@')
+ return parse_sec(t + 1, usec);
+
+ else if (endswith(t, " ago")) {
_cleanup_free_ char *z;
z = strndup(t, strlen(t) - 4);