shift(1)                                                       shift(1)

  shift

  NAME

    shift - shifts parameter/argument list values

  SYNOPSIS

  C shell

    shift [variable]

  Korn shell

    shift [number]

  DESCRIPTION

    This command is a built-in command in the C shell and the Korn shell.

  C shell

    Without arguments, shift(1) discards argv[1] and shifts the members of
    argv to the left. It is an error for argv not to be set or to have less
    than one word as value. With variable, shift(1) performs the same function
    on variable.

  Korn shell

    The shift(1) command shifts positional parameters. Positional parameter 1
    will be assigned the value of parameter 1+number, parameter 2 will be
    assigned the value of parameter 2+number, and so on. The parameters
    represented by the numbers $# down to $#-number+1 will be unset, and the
    parameter "#" will be updated to reflect the new number of positional
    parameters. The value number must be an unsigned decimal integer less than
    or equal to the value of the special parameter "#". If number is not
    given, it is assumed to be 1. If number is 0, the positional and special
    parameters will not be changed.