calendar - reminder service
calendar [-ab] [-A num] [-B num] [-f calendarfile] [-t
[[[cc]yy][mm]]dd]
The calendar utility checks the current directory or the directory specified
by the CALENDAR_DIR environment variable for a file
named calendar
and displays lines that begin with either today's date or
tomorrow's. On
Fridays, events on Friday through Monday are displayed.
The options are as follows:
-A num Print lines from today and next num days (forward,
future).
-a Process the ``calendar'' files of all users and mail
the results
to them. This requires superuser privileges.
-B num Print lines from today and previous num days (backward, past).
-b Enforce special date calculation mode for KOI8 calendars.
-f calendarfile
Use calendarfile as the default calendar file.
-t [[[cc]yy][mm]]dd
Act like the specified value is ``today'' instead of
using the
current date.
To handle calendars in your national code table you can
specify
``LANG=<locale_name>'' in the calendar file as early as possible. To
handle national Easter names in the calendars, ``Easter=<national_name>''
(for Catholic Easter) or ``Paskha=<national_name>'' (for Orthodox Easter)
can be used.
To enforce special date calculation mode for Cyrillic calendars you
should specify ``LANG=<local_name>'' and ``BODUN=<bodun_prefix>'' where
<local_name> can be ru_RU.KOI8-R, uk_UA.KOI8-U or
by_BY.KOI8-B.
Other lines should begin with a month and day. They may be
entered in
almost any format, either numeric or as character strings.
If proper locale
is set, national months and weekdays names can be used.
A single
asterisk (`*') matches every month. A day without a month
matches that
day of every week. A month without a day matches the first
of that
month. Two numbers default to the month followed by the
day. Lines with
leading tabs default to the last entered date, allowing multiple line
specifications for a single date. ``Easter'' (may be followed by a positive
or negative integer) is Easter for this year.
``Paskha'' (may be
followed by a positive or negative integer) is Orthodox
Easter for this
year. Weekdays may be followed by ``-4'' ... ``+5''
(aliases last,
first, second, third, fourth) for moving events like ``the
last Monday in
April''.
By convention, dates followed by an asterisk (`*') are not
fixed, i.e.,
change from year to year.
Day descriptions start after the first <tab> character in
the line; if
the line does not contain a <tab> character, it isn't printed out. If
the first character in the line is a <tab> character, it is
treated as
the continuation of the previous description.
The calendar file is preprocessed by cpp(1), allowing the
inclusion of
shared files such as company holidays or meetings. If the
shared file is
not referenced by a full pathname, cpp(1) searches in the
current (or
home) directory first, and then in the directory
/usr/share/calendar.
Empty lines and lines protected by the C commenting syntax
(/* ... */)
are ignored.
Some possible calendar entries (<tab> characters are highlighted by t
sequence):
LANG=C
Easter=Ostern
#include <calendar.usholiday>
#include <calendar.birthday>
6/tJune 15 (if ambiguous, will default to month/day).
Jun. tJune 15.
15 JutJune 15.
ThursdtEvery Thursday.
JutEvery June 1st.
15t15th of every month.
May Suntsecond Sunday in May (Muttertag)
04/SunLatlast Sunday in April,
tsummer time in Europe
EasttEaster
OsterntGood Friday (2 days before Easter)
PasktOrthodox Easter
calendar File in current directory.
~/.calendar Directory in the user's home directory
(which
calendar changes into, if it exists).
~/.calendar/calendar File to use if no calendar file exists
in the current
directory.
~/.calendar/nomail calendar will not send mail if this
file exists.
calendar.birthday Births and deaths of famous (and notso-famous)
people.
calendar.christian Christian holidays (should be updated
yearly by the
local system administrator so that
roving holidays
are set correctly for the current
year).
calendar.computer Days of special significance to computer people.
calendar.croatian Croatian calendar.
calendar.fictional Fantasy and fiction dates (mostly
LOTR).
calendar.french French calendar.
calendar.german German calendar.
calendar.history Everything else, mostly U.S. historical events.
calendar.holiday Other holidays (including the notwell-known, obscure,
and really obscure).
calendar.judaic Jewish holidays (should be updated
yearly by the
local system administrator so that
roving holidays
are set correctly for the current
year).
calendar.music Musical events, births, and deaths
(strongly oriented
toward rock n' roll).
calendar.openbsd OpenBSD related events.
calendar.pagan Pagan holidays, celebrations and festivals.
calendar.russian Russian calendar.
calendar.usholiday U.S. holidays.
calendar.world World wide calendar.
at(1), cal(1), cpp(1), mail(1), cron(8)
The calendar program previously selected lines which had the
correct date
anywhere in the line. This is no longer true: the date is
only recognized
when it occurs at the beginning of a line.
A calendar command appeared in Version 7 AT&T UNIX.
calendar doesn't handle Jewish holidays or moon phases.
OpenBSD 3.6 June 29, 1993
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