cal



CAL(1)                    BSD General Commands Manual                   CAL(1)


NAME

     cal - displays a calendar


SYNOPSIS

     cal [-smjy13] [[month] year]


DESCRIPTION

     Cal displays a simple calendar.  If arguments are not specified, the cur-
     rent month is displayed.  The options are as follows:

     -1      Display single month output.  (This is the default.)

     -3      Display prev/current/next month output.

     -s      Display Sunday as the first day of the week.  (This is the
             default.)

     -m      Display Monday as the first day of the week.

     -j      Display Julian dates (days one-based, numbered from January 1).

     -y      Display a calendar for the current year.

     A single parameter specifies the year (1 - 9999) to be displayed; note
     the year must be fully specified: “cal 89” will not display a calendar
     for 1989.  Two parameters denote the month (1 - 12) and year.  If no
     parameters are specified, the current month’s calendar is displayed.

     A year starts on Jan 1.

     The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd
     of September.  By this time, most countries had recognized the reforma-
     tion (although a few did not recognize it until the early 1900’s.)  Ten
     days following that date were eliminated by the reformation, so the cal-
     endar for that month is a bit unusual.


HISTORY

     A cal command appeared in Version 6 AT&T UNIX.


OTHER VERSIONS

     Several much more elaborate versions of this program exist, with support
     for colors, holidays, birthdays, reminders and appointments, etc. For
     example, try the cal from http://home.sprynet.com/~cbagwell/projects.html
     or GNU gcal.

BSD                              June 6, 1993                              BSD

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