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CAL(P)			   POSIX Programmer's Manual			CAL(P)

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, repre‐
	      sented 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 Vari‐
	      ables 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 cur‐
	      rent 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)
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