calendar - reminder service
The calendar utility consults the file calendar in the
current directory 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
Monday. calendar can be invoked regularly by using the cron-
tab(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 con-
taining 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 conversion specifications.
Example 1: Possible contents of a template
The following example shows the possible contents of a tem-
%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>
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.
0 Successful completion.
>0 An error occurred.
system password file
temporary files used by calendar
program used to determine dates for today and tomorrow
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWesu |
at(1), crontab(1), mail(1), cron(1M), ypbind(1M),
strftime(3C), attributes(5), environ(5)
Appropriate lines beginning with white space will not be
Your calendar must be public information for you to get rem-
calendar's extended idea of ``tomorrow'' does not account
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 direc-
tories exist; running it on a diskless client has no
calendar is no longer in the default root crontab. Because
of the network burden `calendar -' can induce, it is
inadvisable in an environment 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, indi-
vidual users may wish to use `crontab -e' to edit their own
crontabs to have cron invoke calendar without the - argu-
ment, piping output to mail addressed to themselves.
Man(1) output converted with