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Full Discussion: ksh and hex numbers
Top Forums Shell Programming and Scripting ksh and hex numbers Post 302158196 by gus2000 on Monday 14th of January 2008 06:03:30 PM
Old 01-14-2008
The prefix "NNN#" in front of a number indicates the numeric base. From the ksh man page:

Quote:
Constants take the form [base#]n, where base is a decimal number
between two and thirty-six representing the arithmetic base and n is a
number in that base. If base is omitted, base 10 is used.
The typeset options are "-i" for "integer", and "-u" for "uppercase". But, since A was already typed as a hex integer, $a was converted.

The final step removes the leading base indicator. If you echo a constant that is not base 10, the base is printed.

Code:
# x=123:abc
# echo ${x#123:}        # trim from the left
ABC
# echo ${x%:ABC}        # trim from the right
123

 

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URI::WithBase(3)					User Contributed Perl Documentation					  URI::WithBase(3)

NAME
URI::WithBase - URIs which remember their base SYNOPSIS
$u1 = URI::WithBase->new($str, $base); $u2 = $u1->abs; $base = $u1->base; $u1->base( $new_base ) DESCRIPTION
This module provides the "URI::WithBase" class. Objects of this class are like "URI" objects, but can keep their base too. The base represents the context where this URI was found and can be used to absolutize or relativize the URI. All the methods described in URI are supported for "URI::WithBase" objects. The methods provided in addition to or modified from those of "URI" are: $uri = URI::WithBase->new($str, [$base]) The constructor takes an optional base URI as the second argument. If provided, this argument initializes the base attribute. $uri->base( [$new_base] ) Can be used to get or set the value of the base attribute. The return value, which is the old value, is a URI object or "undef". $uri->abs( [$base_uri] ) The $base_uri argument is now made optional as the object carries its base with it. A new object is returned even if $uri is already absolute (while plain URI objects simply return themselves in that case). $uri->rel( [$base_uri] ) The $base_uri argument is now made optional as the object carries its base with it. A new object is always returned. SEE ALSO
URI COPYRIGHT
Copyright 1998-2002 Gisle Aas. perl v5.16.3 2012-02-11 URI::WithBase(3)
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