V7/usr/man/man1/calendar.1

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.TH CALENDAR 1 
.SH NAME
calendar \- reminder service
.SH SYNOPSIS
.B calendar
[ \- ]
.SH DESCRIPTION
.I Calendar 
consults the file `calendar' in the current directory
and prints out lines that contain today's or
tomorrow's date anywhere in the line.
Most reasonable month-day dates such as `Dec. 7,'
`december 7,' `12/7,' etc., are recognized, but not
`7 December' or `7/12'.
On weekends `tomorrow' extends through Monday.
.PP
When 
an argument is present,
.I calendar
does its job for every user
who has a file `calendar' in his login directory
and sends him any positive results by
.IR mail (1).
Normally this is done daily in the wee hours under control of
.IR cron (8).
.SH FILES
calendar
.br
/usr/lib/calendar to figure out today's and tomorrow's dates
.br
/etc/passwd
.br
/tmp/cal*
.br
egrep, sed, mail subprocesses
.SH "SEE ALSO"
at(1), cron(8), mail(1)
.SH BUGS
Your calendar must be public information for you
to get reminder service.
.br
.I Calendar's
extended idea of `tomorrow' doesn't account for
holidays.