NAME

       cal - print a calendar

SYNOPSIS

       cal [[month] year ]

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, 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.

ASYNCHRONOUS EVENTS

       Default.

STDOUT

       The standard output shall be used to display the calendar, in an unspecified format.

STDERR

       The standard error shall be used only for diagnostic messages.

OUTPUT FILES

       None.

EXTENDED DESCRIPTION

       None.

EXIT STATUS

       The following exit values shall be returned:

        0     Successful completion.

       >0     An error occurred.

CONSEQUENCES OF ERRORS

       Default.

       The following sections are informative.

APPLICATION USAGE

       Note that:

              cal 83

       refers to A.D. 83, not 1983.

EXAMPLES

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       A  future version of IEEE Std 1003.1-2001 may support locale-specific recognition of the date of adoption
       of the Gregorian calendar.

SEE ALSO

       None.

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open  Group  Base
       Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers,
       Inc  and  The  Open Group. In the event of any discrepancy between this version and the original IEEE and
       The Open Group Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group                                   2003                                                CAL(P)