how to call an application in cgi and let it run in web browser

[Xiangli Zhang]

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I want to call an application in cgi file, the
application runs when i run the cgi file at terminal
(which outputs several files), but the application
called  is not executed in the web browser, since no
files are generated.

Can anyone help me this issue?

The following is my code (the last three lines are
called applications not executed under web browser,
but executed under terminal command running).

Thanks a lot,

Justin

#!/usr/bin/perl -w


use strict 'refs';
use Shell;
#use Expect;
use lib '..';
use CGI qw(:standard);
use CGI::Carp qw/fatalsToBrowser/;




#system "gedit /var/www/cgi-bin/file2.pl";
print header();
print start_html("File Upload Example");
#print strong("Version "),$CGI::VERSION,p;


print h1("Sequence Generating Page"),
    br,
    'Using Phrep and Phrap',
    #strong("Main Page: http://picard.mbb.sfu.ca.";),
    br,
    'Author:Justin Zhang. Contact: [EMAIL PROTECTED]',
    p,
    'Select the ',cite('browser'),' button to choose a
chromatographic file
    to upload.  When you press the ',cite ('Process
File'),' button, the sequence will be shown below.';

my @types = ('count lines','count words','count
characters');

# Start a multipart form.
print start_multipart_form(),
    "Enter the file to process:",
    filefield('filename','',45),
    br,
    checkbox_group('count',[EMAIL PROTECTED],[EMAIL PROTECTED]),
    p,
    reset,submit('submit','Process File'),
    endform;

# Process the form if there is a file name entered
if (my $file = param('filename')) {
    
#    "phrap $file";
#    print $cmd."\n";

    my %stats;
    my $tmpfile=tmpFileName($file);
    my $mimetype = uploadInfo($file)->{'Content-Type'}
|| '';
    print hr(),
          h2($file),
          h3($tmpfile),
          h4("MIME Type:",em($mimetype));

    my($lines,$words,$characters,@words) = (0,0,0,0);
    while (<$file>) {
        $lines++;
        $words += @words=split(/\s+/);
        $characters += length($_);
    }
    close $file;
    grep($stats{$_}++,param('count'));
    if (%stats) {
        print strong("Lines: "),$lines,br if $stats{'count
lines'};
        print strong("Words: "),$words,br if $stats{'count
words'};
        print strong("Characters: "),$characters,br if
$stats{'count characters'};
    } else {
        print strong("No statistics selected.");
    }
}

print hr(),
    a({href=>"http://picard.mbb.sfu.ca"},"main page"),
   

    end_html;

system(" perl test1.pl");

system("phrap fasta1");

system("vi test.pl");





  



        
                
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