shiftposix - Online in the Cloud

This is the command shiftposix that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

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 represented by the numbers "$#" down to "$#−n+1" shall be unset, and
the parameter '#' is updated to reflect the new number of positional parameters.

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


If the n operand is invalid or is greater than "$#", this may be considered a syntax error
and a non-interactive shell may exit; if the shell does not exit in this case, a non-zero
exit status shall be returned. Otherwise, zero shall be returned.

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.

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