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Full Discussion: Problem accessing array elements
Top Forums Shell Programming and Scripting Problem accessing array elements Post 302500023 by njdpo on Saturday 26th of February 2011 10:33:57 AM
Old 02-26-2011
Problem accessing array elements
Hi all,
I can’t resolve an array element access issue on (Linux/pdksh) .. So I’m positing for advice.By the way - a friend demonstrated to me - same script works as expected under Solaris.

I have been working on a documentation project where many *.jpg screen shots are used in the documentation. The process that we go through - has us inserting additional images into the sequence of JPG files (where required). Eventually the sequence of images is “frozen” before they go into the next phase of the documentation process.


We need to have these images renumbered before the sequence is frozen. So for example we might start with:
Image_1
…
Image_34
With the additional insertions (and deletions too) – the directory structure morphs into something ugly like:
Image_1
Image_1a
Image_1b
Image_9
Image_9c
Image_9f
Image_34
Image_34h
We need to have a script process the directory structure and sort / rename these files into something like Image_0000, Image_0005, image_00010, image_0015, etc. (incremented by 5’s).



Having 5 spaces (between files) allows us to insert images into the sequence – if we should need to in a last minute emergency effort during later stages of the documentation process.


The problem:

The script is giving us problems (on linux). I can load the array in a loop – but I can NOT access the array elements outside of the loop and I am looking for advice on how to resolve this issue on the Linux box.



Please note - The same script works on Solaris as expected – array elements are accessible outside of the loop!!! (We cant use the Solaris box for this process).


Thank you for your time and input on this matter - Dave

Code:
#!/bin/ksh

touch /tmp/1.jpg /tmp/23.jpg /tmp/65.jpg /tmp/88.jpg

i=0
ls -alF /tmp/*.[jJ][pP][gG] | awk '{print $8}' | while read filein
do
   array[$i]=$filein
   echo "in loop: i=$i, Array($i)='s: ${array[$i]}"
   i=$(($i + 1))
done

echo "out of loop - 2nd element: ${array[2]}"
echo "out of loop - all elements: ${array[@]}"

rm /tmp/1.jpg /tmp/23.jpg /tmp/65.jpg /tmp/88.jpg

Last edited by Franklin52; 02-26-2011 at 05:33 PM.. Reason: Please use code tags
 

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LEARN ABOUT DEBIAN

mdbfontencoding

mdbFontEncoding(5)						 The m17n Library						mdbFontEncoding(5)

NAME

       mdbFontEncoding - Font Encoding

DESCRIPTION

       The m17n library loads information about the encoding of each font form the m17n database by the tags <font, encoding>. The data is loaded
       as a plist of this format.

       FONT-ENCODING ::= PER-FONT *

       PER-FONT ::= '(' FONT-SPEC ENCODING [ REPERTORY ] ')'

       FONT-SPEC ::=
	   '(' [ FOUNDRY FAMILY
	      [ WEIGHT [ STYLE [ STRETCH [ ADSTYLE ]]]]]
	    REGISTRY ')'

       ENCODING ::= SYMBOL

       FONT-SPEC is to specify properties of a font. FOUNDRY to REGISTRY are symbols corresponding to Mfoundry to Mregistry property of a font.
       See m17nFont for the meaning of each property.

       For instance, this FONT-SPEC:

	   (nil alice0 lao iso8859-1)

       should be applied to all fonts whose family name is 'alice0 lao', and registry is 'iso8859-1'.

       ENCODING is a symbol representing a charset. A font matching FONT-SPEC supports all characters of the charset, and a character code is
       mapped to the corresponding glyph code of the font by this charset.

       REPERTORY is a symbol representing a charset or 'nil'. Omitting it is the same as specifying ENCODING as REPERTORY. If it is not 'nil', the
       charset specifies the repertory of the font, i.e, which character it supports. Otherwise, whether a specific character is supported by the
       font or not is asked to each font driver.

       For so called Unicode fonts (registry is 'iso10646-1'), it is recommended to specify 'nil' as REPERTORY because such fonts usually supports
       only a subset of Unicode characters.

COPYRIGHT

       Copyright (C) 2001 Information-technology Promotion Agency (IPA)
       Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License
       <http://www.gnu.org/licenses/fdl.html>.

Version 1.6.2							    12 Jan 2011 						mdbFontEncoding(5)
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