If you are running on a UN*X box you might want to try to use convert - it can do everything the ImageMagick module can (and more) and is just run on the shell - heck, you can even build a shell script for this. If the thumbnails need to be all of the same size, thinks would look like this: 
#!/bin/zsh

a=`find $1 -type f | grep -E 'gif|jpg'` 
for img in $a  
do 
  echo "found : $img" 
  echo $img | perl -e 'while (<>) { s/(\w+)\.(\w+)$/$1\.thumb\.$2/; pr
+int $_ }'\
 | while read thumb 
  do  
    convert -scale 50x50 $img $thumb 
  done 
done

[download]
tested and works...

Sinister greetings.
"With tying hashes you can do everything God and Larry have forbidden" -- Johan Vromans - YAPC::Europe 2001
perldoc -q $_

In reply to Re: thumbnails by Sinister
in thread thumbnails by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.