174 lines
6.1 KiB
Groff
174 lines
6.1 KiB
Groff
.\" $NetBSD: calendar.1,v 1.9 1997/10/18 12:27:31 lukem Exp $
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.\"
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.\" Copyright (c) 1989, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)calendar.1 8.1 (Berkeley) 6/29/93
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.\"
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.Dd June 29, 1993
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.Dt CALENDAR 1
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.Os
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.Sh NAME
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.Nm calendar
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.Nd reminder service
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.Sh SYNOPSIS
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.Nm
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.Op Fl a
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.Op Fl f Ar file
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.Op Fl l Ar days
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.Op Fl w Ar days
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.Op Fl d Ar MMDD[[YY]YY]
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.Sh DESCRIPTION
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The
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.Nm
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utility processes text files and displays lines that match certain dates.
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.Pp
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The following options are available:
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.Bl -tag -width Ds
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.It Fl a
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Process the ``calendar'' files of all users and mail the results
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to them.
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This requires super-user privileges.
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.It Fl d Ar MMDD[[YY]YY]
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Display lines for the given date. By default, the current date is used.
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The year, which may be given in either two or four digit format, is used
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only for purposes of determining wether the given date falls on a Friday
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in that year (see below). If the year is not specified, the current
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year is assumed.
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.It Fl f Ar file
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Display matching calendar files from the given filename, by default
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.Pa calendar .
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The filename may be absolute. If not absolute, it is taken
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relative to the current directory or the directory specified by the
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.Dq Ev CALENDAR_DIR
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environment variable. Or, if the
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.Fl a
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flag is given, a non-absolute filename is taken relative to each user's
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home directory in turn.
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.It Fl l Ar days
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Causes the program to ``look ahead'' a given number of days (default
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one) from the specified date and display their entries as well.
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.It Fl w Ar days
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Causes the program to add the specified number of days to the ``look
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ahead'' number if and only if the day specified is a Friday. The default
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value is two, which causes
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.Nm
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to print entries through the weekend on Fridays.
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.El
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.Pp
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Lines should begin with a month and day.
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They may be entered in almost any format, either numeric or as character
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strings.
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A single asterisk (``*'') matches every month.
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A day without a month matches that day of every week.
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A month without a day matches the first of that month.
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Two numbers default to the month followed by the day.
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Lines with leading tabs default to the last entered date, allowing
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multiple line specifications for a single date.
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By convention, dates followed by an asterisk are not fixed, i.e., change
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from year to year.
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.Pp
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The ``calendar'' file is preprocessed by
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.Xr cpp 1 ,
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allowing the inclusion of shared files such as company holidays or
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meetings.
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If the shared file is not referenced by a full pathname,
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.Xr cpp 1
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searches in the current (or home) directory first, and then in the
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directory
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.Pa /usr/share/calendar .
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Empty lines and lines protected by the C commenting syntax
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.Pq Li /* ... */
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are ignored.
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.Pp
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Some possible calendar entries:
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.Bd -unfilled -offset indent
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#include <calendar.usholiday>
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#include <calendar.birthday>
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6/15 ... June 15 (if ambiguous, will default to month/day).
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Jun. 15 ... June 15.
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15 June ... June 15.
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Thursday ... Every Thursday.
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June ... Every June 1st.
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15 * ... 15th of every month.
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.Ed
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.Sh FILES
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The following default calendar files are provided:
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.Pp
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.Bl -tag -width calendar.christian -compact
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.It Pa calendar.birthday
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Births and deaths of famous (and not-so-famous) people.
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.It Pa calendar.christian
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Christian holidays.
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This calendar should be updated yearly by the local system administrator
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so that roving holidays are set correctly for the current year.
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.It Pa calendar.computer
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Days of special significance to computer people.
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.It Pa calendar.history
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Everything else, mostly U. S. historical events.
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.It Pa calendar.holiday
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Other holidays, including the not-well-known, obscure, and
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.Em really
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obscure.
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.It Pa calendar.judaic
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Jewish holidays.
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This calendar should be updated yearly by the local system administrator
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so that roving holidays are set correctly for the current year.
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.It Pa calendar.music
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Musical events, births, and deaths.
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Strongly oriented toward rock 'n' roll.
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.It Pa calendar.usholiday
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U.S. holidays.
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This calendar should be updated yearly by the local system administrator
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so that roving holidays are set correctly for the current year.
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.El
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.Sh SEE ALSO
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.Xr at 1 ,
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.Xr cpp 1 ,
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.Xr cron 8
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.Sh COMPATIBILITY
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The
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.Nm
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program previously selected lines which had the correct date anywhere
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in the line.
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This is no longer true, the date is only recognized when it occurs
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first on the line.
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.Sh HISTORY
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A
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.Nm
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command appeared in
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.At v7 .
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.Sh BUGS
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.Nm
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doesn't handle events that move around from year to year, i.e.,
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``the last Monday in April''.
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