I am trying to get a cgi script working but it's unable to find a file it requires.

The cgi script is located in my /public_html/cgi-bin (of course) and my file in a directory called /public_html/uploadedfiles

I don't understand why my script is not finding the file ... it is certainly there and at that location.

Code follows 

#!/usr/bin/perl -wT
#
#
#

# ensure all fatals go to browser during debugging and set-up
# comment this BEGIN block out on production code for security
BEGIN {
    $|=1;
    print "Content-type: text/html\n\n";
    use CGI::Carp('fatalsToBrowser');
}

use strict;
use warnings;

use diagnostics;
use CGI qw/:standard/;

#print "Content-type: text/html\n\n"

#
# Upload directory for files
#
my $upload_dir = "/home/me/uploaded_files";

my $file = "file.txt";

#
# Path to PDB processing program
#

my $program = "/home/me/programs/program";

#
# Get the name of the file to process from the command line
# Later we will get this from the input to the CGI program
#

#my $input_file = shift;

my $input_file = "$file";

#die "Usage: $0 INPUT_FILENAME\n" unless $input_file;

#die "Can't process '$upload_dir/$input_file': File does not exist!\n"
  #  unless -f "$upload_dir/$input_file";
#
# Create web page...
#
print 
    start_html("Processing PDB file '$input_file' ..."), $/,
    h1("Processing PDB file '$input_file' ..."), $/;
    
chdir $upload_dir;

die "Usage: $0 INPUT_FILENAME\n" unless $input_file;

die "Can't process '$upload_dir/$input_file': File does not exist!\n"
    unless -f "$upload_dir/$input_file";

open (PROG, "| $program") || die "Can't run '$program': $!\n";
print PROG "$input_file\n";
close(PROG);

print p("OK .. working thus far"), end_html();

[download]
Any help much appreciated

In reply to where art thou file? by Angharad

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.