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

NAME
       shift - shift positional parameters

SYNOPSIS
       shift [n]

DESCRIPTION
       The  positional	parameters  shall  be  shifted. Positional parameter 1
       shall be assigned the value of parameter (1+n), parameter  2  shall  be
       assigned the value of parameter (2+n), and so on. The parameters repre‐
       sented by the numbers "$#" down to "$#-n+1" shall  be  unset,  and  the
       parameter '#' is updated to reflect the new number of positional param‐
       eters.

       The value n shall be an unsigned decimal integer less than or equal  to
       the  value  of the special parameter '#' .  If n is not given, it shall
       be assumed to be 1. If n is 0, the positional  and  special  parameters
       are not changed.

OPTIONS
       None.

OPERANDS
       See the DESCRIPTION.

STDIN
       Not used.

INPUT FILES
       None.

ENVIRONMENT VARIABLES
       None.

ASYNCHRONOUS EVENTS
       Default.

STDOUT
       Not used.

STDERR
       The standard error shall be used only for diagnostic messages.

OUTPUT FILES
       None.

EXTENDED DESCRIPTION
       None.

EXIT STATUS
       The exit status is >0 if n>$#; otherwise, it is zero.

CONSEQUENCES OF ERRORS
       Default.

       The following sections are informative.

APPLICATION USAGE
       None.

EXAMPLES
	      $ set a b c d e
	      $ shift 2
	      $ echo $*
	      c d e

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       Special Built-In Utilities

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			      SHIFT(P)

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