Hello, i am a newbie at bash scripting and i have a question. I have many hpi image files in a directory and want to convert them png images.
I found on internet a perl script for this but it converts just single file and i cannot nor modify it neither pass it input file name and desired output file name for batch processing.
Could someone help me, i have more than tousand hpi image files...
( actually my problem is define 2 variables and pass them to the perl script recursively, it sounds simple but not for me)

the script is below;
---------------------
#! /usr/bin/perl

use Image::Magick; # AAM IT Solutions LTD,License::AGPLv3
my( $image, $mask, $input, $output, $jpg, $png, $line );
#input:hpi file,output: image file or none to display
$image = Image::Magick->new(magick=>'jpg');
#hpi stores the image in jpg
$mask = Image::Magick->new(magick=>'png');
#hpi stores the mask in png
($input, $output) = ($ARGV[0],$ARGV[1]);
open(I, "$input") || die("Error: Opening input argument.");
binmode(I);
while($line = <I>){ $_ .= $line;}
close(I);
($jpg, $png) = m/^.{32}(.*)(\211PNG.*)$/s;
$image->BlobToImage($jpg);
$mask->BlobToImage($png);
$image->Set(alpha=>Off);
$image->Composite(image=>$image,image=>$mask,compose=>CopyOpacity);
if ( "$output"){ $image->Write($output);}else{ $image->display();}
----------------------
and i run it with this command line,

"perl hpi2png.pl /home/user/path/input.hpi /home/user/path/output.png"
but how can i find filenames in a directory and pass all of the files recursively to this script in order to convert them quicker...

that script uses imagemagick ,so....

have you tried the normal everyday use of imagemagick ?
then if that works use the IM bulk "mogrify"
and

Hi, i didn't try it before you offered this simple command for converting hpi images but i tried now and it didn't work, i got this message

mogrify: no decode delegate for this image format `000204_4345_1092_oslp.hpi' @ constitute.c/ReadImage/530.
i think it is because of the structure of hpi image format, it is a special format.
i found a link about it (it is a cached webpage, it doesn't actually exist now, thanks to google)
http://webcache.googleusercontent.co...&client=ubuntu

i just need to repeat my command with all file names in a directory, rather than converting just a single image.
actually my question is not about a specific format, it is about bash scripting. in other words how can i make a list of files in a directory and use them.

"perl hpi2png.pl /home/user/path/input.hpi /home/user/path/output.png"
i need to change "input.hpi" with every file name and give a related output name instead of "output.png". my question is how can i recursively do it.
thanks in advance