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CAL

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
PARAMETERS
HISTORY
AVAILABILITY

NAME

cal − display a calendar

SYNOPSIS

cal [options] [[[day] month] year]

DESCRIPTION

cal displays a simple calendar. If no arguments are specified, the current month is displayed.

OPTIONS

−1, −−one

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

−3, −−three

Display prev/current/next month output.

−s, −−sunday

Display Sunday as the first day of the week.

−m, −−monday

Display Monday as the first day of the week.

−j, −−julian

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

−y, −−year

Display a calendar for the current year.

−V, −−version

Display version information and exit.

−h, −−help

Display help screen and exit.

PARAMETERS

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 3rd 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 UNIX.

AVAILABILITY

The cal command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.