calendar(1) User Commands calendar(1)NAMEcalendar - reminder service
SYNOPSIScalendar [-]
DESCRIPTION
The calendar utility consults the file calendar in the current direc‐
tory and writes lines that contain today's or tomorrow's date anywhere
in the line to standard output. Most reasonable month-day dates such as
Aug. 24, august 24, 8/24, and so forth, are recognized, but not 24
August or 24/8. On Fridays and weekends "tomorrow" extends through Mon‐
day. calendar can be invoked regularly by using the crontab(1) or at(1)
commands.
When the optional argument - is present, calendar does its job for
every user who has a file calendar in his or her login directory and
sends them any positive results by mail(1). Normally this is done daily
by facilities in the UNIX operating system (seecron(1M)).
If the environment variable DATEMSK is set, calendar will use its value
as the full path name of a template file containing format strings. The
strings consist of conversion specifications and text characters and
are used to provide a richer set of allowable date formats in different
languages by appropriate settings of the environment variable LANG or
LC_TIME; see environ(5). Seestrftime(3C) for the list of allowable con‐
version specifications.
EXAMPLES
Example 1: Possible contents of a template
The following example shows the possible contents of a template:
%B %eth of the year %Y
%B represents the full month name, %e the day of month and %Y the year
(4 digits).
If DATEMSK is set to this template, the following calendar file would
be valid:
March 7th of the year 1989 <Reminder>
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables
that affect the execution of calendar: LC_CTYPE, LC_TIME, LC_MESSAGES,
NLSPATH, and TZ.
EXIT STATUS
0 Successful completion.
>0 An error occurred.
FILES
/etc/passwd system password file
/tmp/cal* temporary files used by calendar
/usr/lib/calprog program used to determine dates for today and
tomorrow
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWesu │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOat(1), crontab(1), mail(1), cron(1M), ypbind(1M), strftime(3C),
attributes(5), environ(5)NOTES
Appropriate lines beginning with white space will not be printed.
Your calendar must be public information for you to get reminder ser‐
vice.
calendar's extended idea of ``tomorrow'' does not account for holidays.
The - argument works only on calendar files that are local to the
machine; calendar is intended not to work on calendar files that are
mounted remotely with NFS. Thus, `calendar -' should be run only on
diskful machines where home directories exist; running it on a disk‐
less client has no effect.
calendar is no longer in the default root crontab. Because of the net‐
work burden `calendar -' can induce, it is inadvisable in an environ‐
ment running ypbind(1M) with a large passwd.byname map. If, however,
the usefulness of calendar outweighs the network impact, the super-user
may run `crontab -e' to edit the root crontab. Otherwise, individual
users may wish to use `crontab -e' to edit their own crontabs to have
cron invoke calendar without the - argument, piping output to mail
addressed to themselves.
SunOS 5.10 1 Feb 1995 calendar(1)