shift(1) manual page
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shift - shell built-in function to traverse either a shell’s argument
list or a list of field-separated words
shift [ n ]
shift [
variable ]
*
- shift [ n ]
-
SUNWcsu
The positional parameters
from $n+1 ... are renamed $1 ... . If n is not given, it is assumed to be 1.
The
components of argv, or variable, if supplied, are shifted to the left,
discarding the first component. It is an error for the variable not to be
set or to have a null value.
The positional parameters from $n+1 $n+1
... are renamed $1 ..., default n is 1. The parameter n can be any arithmetic
expression that evaluates to a non-negative number less than or equal to
$#.
On this man page, ksh(1)
commands that are preceded by one or two *
(asterisks) are treated specially in the following ways:
.- Variable assignment
lists preceding the command remain in effect when the command completes.
.- I/O redirections are processed after variable assignments.
.- Errors cause
a script that contains them to abort.
.- Words, following a command preceded
by ** that are in the format of a variable assignment, are expanded with
the same rules as a variable assignment. This means that tilde substitution
is performed after the = sign and word splitting and file name generation
are not performed.
csh(1)
, ksh(1)
, sh(1)
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