Cal Command

NAME

     cal - displays a calendar

SYNOPSIS

     cal [-smjy13] [[[day] month] year]

DESCRIPTION

     Cal displays a simple calendar.  If arguments are not specified, the current 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.

     -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.

    -V         Display version information and exit.

     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.  Three parameters denote the day (1-31), month and year, and the day will be highlighted if the calendar is displayed on a terminal.  If no parameters are specified, the current month’s calendar is displayed.

     A year starts on Jan 1. The first day of the week is determined by the locale.

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

HISTORY

     A cal command appeared in Version 6 AT&T