calendar

CALENDAR(1)                  General Commands Manual                 CALENDAR(1)

NAME
     calendar – reminder service

SYNOPSIS
     calendar [-a] [-A num] [-B num] [-F friday] [-f calendarfile]
              [-t dd[.mm[.year]]] [-W num]

DESCRIPTION
     The calendar utility checks the current directory for a file named calendar
     and displays lines that begin with either today's date or tomorrow's.  On
     the day before a weekend (normally Friday), events for the next three days
     are displayed.

     The following options are available:

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

     -a      Process the ``calendar'' files of all users and mail the results to
             them.  This requires super-user privileges.

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

     -F friday
             Specify which day of the week is ``Friday'' (the day before the
             weekend begins).  Default is 5.

     -f calendarfile
             Use calendarfile as the default calendar file.

     -t dd[.mm[.year]]
             For test purposes only: set date directly to argument values.

     -W num  Print lines from today and the next num days (forward, future).
             Ignore weekends when calculating the number of days.

     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.

     Other lines should begin with a month and day.  They may be entered in
     almost any format, either numeric or as character strings.  If the proper
     locale is set, national month and weekday 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'', is Easter for this year, and may be followed by a positive or
     negative integer.

     ``Paskha'', is Orthodox Easter for this year, and may be followed by a
     positive or negative integer.

     Weekdays may be followed by ``-4'' ... ``+5'' (aliases for 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 is not displayed.  If the first
     character in the line is a <tab> character, it is treated as a continuation
     of the previous line.

     The ``calendar'' file is preprocessed by cpp(1), allowing the inclusion of
     shared files such as lists of 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 highlighted by \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         calendar HOME directory.  A chdir is done into this
                         directory if it exists.
     ~/.calendar/calendar
                         calendar file to use if no calendar file exists in the
                         current directory.
     ~/.calendar/nomail  do not send mail if this file exists.

     The following default calendar files are provided:

     calendar.all          File which includes all the default files.
     calendar.australia    Calendar of events in Australia.
     calendar.birthday     Births and deaths of famous (and not-so-famous)
                           people.
     calendar.christian    Christian holidays.  This calendar 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     Calendar of events in Croatia.
     calendar.freebsd      Birthdays of FreeBSD committers.
     calendar.french       Calendar of events in France.
     calendar.german       Calendar of events in Germany.
     calendar.history      Everything else, mostly U.S. historical events.
     calendar.holiday      Other holidays, including the not-well-known,
                           obscure, and really obscure.
     calendar.judaic       Jewish holidays.  This calendar 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.newzealand   Calendar of events in New Zealand.
     calendar.russian      Russian calendar.
     calendar.southafrica  Calendar of events in South Africa.
     calendar.usholiday    U.S. holidays.  This calendar should be updated
                           yearly by the local system administrator so that
                           roving holidays are set correctly for the current
                           year.
     calendar.world        Includes all calendar files except for national
                           files.

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 recognized
     when it occurs at the beginning of a line.

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

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

BUGS
     The calendar utility does not handle Jewish holidays and moon phases.

macOS 12.1                        June 13, 2002                       macOS 12.1