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30 .\" @(#)calendar.1 8.1 (Berkeley) 6/29/93
41 .Op Fl d Ar MMDD[[YY]YY]
48 utility processes text files and displays lines that match certain dates.
50 The following options are available:
55 files of all users and mail the results to them.
56 This requires super-user privileges.
57 .It Fl d Ar MMDD[[YY]YY]
58 Display lines for the given date.
59 By default, the current date is used.
60 The year, which may be given in either two or four digit format, is used
61 only for purposes of determining wether the given date falls on a Friday
62 in that year (see below).
63 If the year is not specified, the current year is assumed.
65 Display matching calendar files from the given filename.
66 By default, the following filenames are checked for:
67 .Bl -item -compact -offset indent
75 and the first which is found is used.
76 The filename may be absolute.
77 If not absolute, it is taken relative to the
78 directory specified by the
80 environment variable, if set; otherwise, it is taken relative to the
81 user's home directory.
84 flag is given, a non-absolute filename is taken relative to each user's
85 home directory in turn.
89 a given number of days (default one) from the specified date and
90 display their entries as well.
92 Causes the program to add the specified number of days to the
94 number if and only if the day specified is a Friday.
95 The default value is two, which causes
97 to print entries through the weekend on Fridays.
103 environment variable.
104 Passing this flag allows users the (somewhat obscure) option of
105 including a named pipe via
108 syntax, but opens up the possibility of
110 hanging indefinitely if users do so incorrectly.
113 flag should never be used with
118 Lines should begin with a month and day.
119 They may be entered in almost any format, either numeric or as character
123 matches every month, or every day if a month has been provided.
124 This means that two asterisks
126 matches every day of the year, and is thus useful for ToDo tasks.
127 A day without a month matches that day of every week.
128 A month without a day matches the first of that month.
129 Two numbers default to the month followed by the day.
130 Lines with leading tabs default to the last entered date, allowing
131 multiple line specifications for a single date.
132 By convention, dates followed by an asterisk are not fixed, i.e., change
137 file is preprocessed by
139 allowing the inclusion of shared files such as company holidays or
141 If the shared file is not referenced by a full pathname,
143 searches in the current (or home) directory first, and then in the
145 .Pa /usr/share/calendar .
146 Empty lines and lines protected by the C commenting syntax
150 Some possible calendar entries:
151 .Bd -literal -offset indent
152 #include \*[Lt]calendar.usholiday\*[Gt]
153 #include \*[Lt]calendar.birthday\*[Gt]
155 6/15 ... June 15 (if ambiguous, will default to month/day).
158 Thursday ... Every Thursday.
159 June ... Every June 1st.
160 15 * ... 15th of every month.
161 *15 ... 15th of every month.
162 June* ... Every day of June.
166 The following default calendar files are provided:
168 .Bl -tag -width calendar.christian -compact
169 .It Pa calendar.birthday
170 Births and deaths of famous (and not-so-famous) people.
171 .It Pa calendar.christian
173 This calendar should be updated yearly by the local system administrator
174 so that roving holidays are set correctly for the current year.
175 .It Pa calendar.computer
176 Days of special significance to computer people.
177 .It Pa calendar.history
178 Everything else, mostly U.S. historical events.
179 .It Pa calendar.holiday
180 Other holidays, including the not-well-known, obscure, and
183 .It Pa calendar.judaic
185 This calendar should be updated yearly by the local system administrator
186 so that roving holidays are set correctly for the current year.
188 Important dates in the Lord of the Rings series.
189 .It Pa calendar.music
190 Musical events, births, and deaths.
191 Strongly oriented toward rock 'n' roll.
192 .It Pa calendar.netbsd
193 Important dates in the history of the
196 Mostly releases and port additions.
197 .It Pa calendar.usholiday
199 This calendar should be updated yearly by the local system administrator
200 so that roving holidays are set correctly for the current year.
209 program previously selected lines which had the correct date anywhere
211 This is no longer true, the date is only recognized when it occurs
218 command was modified to search the user's home directory instead of the current
219 directory by default.
220 Users desiring the historical behavior should set the
222 environment variable to
234 doesn't handle events that move around from year to year, i.e.,
235 .Dq the last Monday in April .
239 option ignores the user's
241 environment variable.