CALENDAR(1)                OpenBSD Reference Manual                CALENDAR(1)

NAME
     calendar - reminder service

SYNOPSIS
     calendar [-a] [-A num] [-b] [-B num] [-f calendarfile] [-t
              [[[cc]yy][mm]]dd]

DESCRIPTION
     The calendar utility checks the current directory or the directory speci-
     fied 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      Process the ``calendar'' files of all users and mail the results
             to them.  This requires superuser privileges.

     -A num  Print lines from today and next num days (forward, future).

     -b      Enforce special date calculation mode for KOI8 calendars.

     -B num  Print lines from today and previous num days (backward, past).

     -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 lo-
     cale 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 posi-
     tive 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 a \t
     sequence):

           LANG=C
           Easter=Ostern

           #include <calendar.usholiday>
           #include <calendar.birthday>

           6/15\tJune 15 (if ambiguous, will default to month/day).
           Jun. 15\tJune 15.
           15 June\tJune 15.
           Thursday\tEvery Thursday.
           June\tEvery June    1st.
           15 *\t15th of every month.

           May Sun+2\tsecond Sunday in May (Muttertag)
           04/SunLast\tlast    Sunday in April,
           \tsummer  time in   Europe
           Easter\tEaster
           Ostern-2\tGood Friday (2 days before Easter)
           Paskha\tOrthodox    Easter

FILES
     calendar              file in current directory
     ~/.calendar           file in home directory (which calendar chdir(1)'s
                           into if it exists)
     ~/.calendar/calendar  file to use if no calendar file exists in the cur-
                           rent directory
     ~/.calendar/nomail    calendar will not send mail if this file exists
     calendar.birthday     births and deaths of famous (and not-so-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.history      everything else, mostly U.S. historical events
     calendar.holiday      other holidays (including the not-well-known, ob-
                           scure, 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 ori-
                           ented toward rock n' roll)
     calendar.usholiday    U.S. holidays
     calendar.german       German calendar
     calendar.russian      Russian calendar

SEE ALSO
     at(1), cal(1), cpp(1), mail(1), cron(8)

COMPATIBILITY
     The calendar program previously selected lines which had the correct date
     anywhere in the line.  This is no longer true: the date is only recog-
     nized when it occurs at the beginning of a line.

HISTORY
     A calendar command appeared in Version 7 AT&T UNIX.

BUGS
     calendar doesn't handle Jewish holidays or moon phases.

OpenBSD 3.0                      June 29, 1993                               3
