CAL(1) General Commands Manual CAL(1)

NAME

cal — print a calendar

SYNOPSIS

cal [[month] year file ...]

DESCRIPTION

The cal utility shall write a calendar to standard output using the Julian calendar for dates from January 1, 1 through September 2, 1752 and the Gregorian calendar for dates from September 14, 1752 through December 31, 9999 as though the Gregorian calendar had been adopted on September 14, 1752.

OPTIONS

None.

OPERANDS

The following operands shall be supported:

month: Specify the month to be displayed, represented as a decimal integer from 1 (January) to 12 (December). The default shall be the current month.
year: Specify the year for which the calendar is displayed, represented as a decimal integer from 1 to 9999. The default shall be the current year.

STDIN

Not used.

INPUT FILES

None.

ENVIRONMENT VARIABLES

The following environment variables shall affect the execution of cal:

LANG: Provide a default value for the internationalization variables that are unset or null. (See the Base Definitions volume of IEEE Std 1003.1-2001 (“POSIX.1”), Section 8.2, Internationalization Variables for the precedence of internationalization variables used to determine the values of locale categories.)
LC_ALL: If set to a non-empty string value, override the values of all the other internationalization variables.
LC_CTYPE: Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as opposed to multi-byte characters in arguments).
LC_MESSAGES: Determine the locale that should be used to affect the format and contents of diagnostic messages written to standard error, and informative messages written to standard output.
LC_TIME: Determine the format and contents of the calendar.
NLSPATH: Determine the location of message catalogs for the processing of LC_MESSAGES .
TZ: Determine the timezone used to calculate the value of the current month.