The find() subroutine has no way to pass information back out of it. Define a %hash with larger scope than the find() routine and have the find routine add hash keys,values to that %hash.

BTW: 

my @ARGV ="C:/Main/work"; 
die "Need directories\n" unless @ARGV;

[download]
this makes no sense. @ARGV is a Perl defined array. It contains the command line arguments. This is not a thing for you to define as a "my" variable. 
my $default_dir = "C:/Main/work";
if (@ARGV == 1) 
{  
   $default_dir = shift @ARGV
)
elsif (@ARGV >1)
{
   die "too many command line args\n";
};
# $default_dir remains in effect if there was not 
# exactly one command line argument

[download]

In reply to Re: How to get file path into hash data structure. by Marshall
in thread How to get file path into hash data structure. by veerubiji

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.