Dear Monks, I wrote this program to find a file, copy it and rename it in the destination directory. It finds the file but doesn't copy or rename the file. There is no errors when I run the script. could you take a look at it and let me know what I'm doing wrong. I'll appreciate your feedback. Here is my code:

#! perl -w

use strict;
use File::Copy;

my $infile = 'c:/doclisth.chr';
open IN, "<$infile" or die "Couldn't open $infile, $!";
while (<IN>) {
    chomp;
    my @fields   = split /,/;

    my $mrn = $fields[0]; 

    my $path_str = $fields[13];

    do { warn "Empty field 13"; next } unless $path_str;

    my @path = split /\\/, $path_str;

    my $dir = join "\\", @path[ 0, 5, 6 ];

    process_dir($dir,$mrn);
}
close IN;


sub process_dir {
    my $dir = shift;
    my $mrn = shift;

    do { warn "$dir does not exist!\n"; return } unless -e $dir;
    opendir DIR, $dir or do { warn "Could not open $dir $!\n" ; return

};
    while ( my $file = readdir DIR ) {
        next unless -f "$dir\\$file";
        next unless $file =~ m/\.rtf$/;
        
       my $newname = rename ($file, $mrn);

        copy( "$dir\\$file", "C:\\testfiles\\$newname" )
          or die "Failed to copy $file: $!\n";
    }
}
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