CALENDAR(1) System General Commands Manual CALENDAR(1)
NAME
calendar - reminder service
SYNOPSIS
calendar [-a] [-f file] [-l days] [-w days] [-d MMDD[[YY]YY]]
DESCRIPTION
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 wether 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 calendar. The filename may be absolute. If not absolute,
it is taken relative to the current directory or the directory
specified by the ``CALENDAR_DIR'' environment variable. 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 Fri-
day. The default value is two, which causes calendar to print
entries through the weekend on Fridays.
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. 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 specifica-
tions 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.
FILES
The following default calendar files are provided:
calendar.birthday Births and deaths of famous (and not-so-famous) peo-
ple.
calendar.christian Christian holidays. This calendar should be updated
yearly by the local system administrator so that rov-
ing 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 obscure.
calendar.judaic Jewish holidays. This calendar should be updated
yearly by the local system administrator so that rov-
ing 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. This calendar should be updated
yearly by the local system administrator so that rov-
ing holidays are set correctly for the current year.
SEE ALSO
at(1), cpp(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 first on the line.
HISTORY
A calendar command appeared in Version 7 AT&T UNIX.
BUGS
calendar doesn't handle events that move around from year to year, i.e.,
``the last Monday in April''.
BSD June 29, 1993 BSD