NAME
calendar - reminder service
SYNOPSIS
calendar [-] [-r]
OPTIONS
- Work for every user and send mail to him
-r Restrict multiple execution on the same day
EXAMPLES
calendar # Check calendar file in current direc-
tory
calendar # Normary used under the control of
cron(8)
calendar -r # Normary used in /etc/rc file
DESCRIPTION
Basically calendar program consults the file calendar in the
current directory and display lines which contain today's or
tomorrow's date. Month-day formats such as '12/25', 'Dec.
25', 'december 25', '*/25', '12/*', '*/*' are recognized.
The asterisk means 'all' days or 'all' months. On weekends
'tomorrow' extends through next Monday without any con-
sideration about holidays. To prevent ambiguity, the for-
mats '25 Dec.' and '25/12' are not recognized.
When an argument - is present, calendar works for all users
with a file calendar in their login directories and sends
them mail. Normally this is done daily under the control of
cron.
The -r option does its the same job as - option, but touches
the calendar to prevents further access on the same day.
Normally this is done in the /etc/rc file on a machine
which may be booted several times in one day.
SEE ALSO
cron(8).