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CALENDAR(1)			   BSD General Commands Manual			      CALENDAR(1)

     calendar -- reminder service

     calendar [-ax] [-d MMDD[[YY]YY]] [-f file] [-l days] [-w days]

     The calendar utility processes text files and displays lines that match certain dates.

     The following options are available:

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

     -d MMDD[[YY]YY]
	     Display lines for the given date.	By default, the current date is used.  The year,
	     which may be given in either two or four digit format, is used only for purposes of
	     determining whether the given date falls on a Friday in that year (see below).  If
	     the year is not specified, the current year is assumed.

     -f file
	     Display matching calendar files from the given filename.  By default, the following
	     filenames are checked for:
	     and the first which is found is used.  The filename may be absolute.  If not abso-
	     lute, it is taken relative to the directory specified by the CALENDAR_DIR environ-
	     ment variable, if set; otherwise, it is taken relative to the user's home directory.
	     Or, if the -a flag is given, a non-absolute filename is taken relative to each
	     user's home directory in turn.

     -l days
	     Causes the program to ``look ahead'' a given number of days (default one) from the
	     specified date and display their entries as well.

     -w days
	     Causes the program to add the specified number of days to the ``look ahead'' number
	     if and only if the day specified is a Friday.  The default value is two, which
	     causes calendar to print entries through the weekend on Fridays.

     -x      Causes calendar not to set the CPP_RESTRICTED environment variable.  Passing this
	     flag allows users the (somewhat obscure) option of including a named pipe via
	     cpp(1)'s #include syntax, but opens up the possibility of calendar hanging indefi-
	     nitely if users do so incorrectly.  For this reason, the -x flag should never be
	     used with calendar -a.

     Lines should begin with a month and day.  They may be entered in almost any format, either
     numeric or as character strings.  A single asterisk ('*') matches every month, or every day
     if a month has been provided.  This means that two asterisks ('**') matches every day of the
     year, and is thus useful for ToDo tasks.  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, allow-
     ing multiple line specifications for a single date.  By convention, dates followed by an
     asterisk are not fixed, i.e., change from year to year.

     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:

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

	   6/15 	   ... June 15 (if ambiguous, will default to month/day).
	   Jun. 15	   ... June 15.
	   15 June	   ... June 15.
	   Thursday	   ... Every Thursday.
	   June 	   ... Every June 1st.
	   15 * 	   ... 15th of every month.
	   *15		   ... 15th of every month.
	   June*	   ... Every day of June.
	   **		   ... Every day

     The following default calendar files are provided:

     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.history	 Everything else, mostly U.S. historical events.
     calendar.holiday	 Other holidays, including the not-well-known, obscure, and really
     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.lotr	 Important dates in the Lord of the Rings series.
     calendar.music	 Musical events, births, and deaths.  Strongly oriented toward rock 'n'
     calendar.netbsd	 Important dates in the history of the NetBSD project.	Mostly releases
			 and port additions.
     calendar.usholiday  U.S. holidays.  This calendar should be updated yearly by the local sys-
			 tem administrator so that roving holidays are set correctly for the cur-
			 rent year.

     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 first on the line.

     In NetBSD 3.0, the calendar command was modified to search the user's home directory instead
     of the current directory by default.  Users desiring the historical behavior should set the
     CALENDAR_DIR environment variable to ., or use the -f flag.

     at(1), cpp(1), cron(8)

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

     calendar doesn't handle events that move around from year to year, i.e., ``the last Monday
     in April''.

     The -a option ignores the user's CALENDAR_DIR environment variable.

BSD					 August 27, 2009				      BSD
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