Thankfully, it was much easier than I thought! Here's what solved my problem: 
#!/usr/bin/perl -w
use strict;
use Encode qw(from_to);
use Encode::Byte;

my $file = "C:\\Αντίγραφο
+\\VOLINFO.TXT";
from_to($file, "utf8", "cp1253");

open FILE, $file or die "can't open $file: $!";
while (<FILE>) {
    print;
}
close FILE;

[download]
I can't understand why it didn't work when I directly used this type of characters: \xc1\xed... etc. (I checked! The output was correct cp1253 characters... or wasn't it?)

Oh well, I guess that's why some people write modules that work while I get stuck with encoding issues before even writing a line of code. ;-)

Anyway, thanks to everybody who took the time to help me out.

In reply to Re: Can't Find File When Non-ASCII Letters Appear in Path by emav
in thread Can't Find File When Non-ASCII Letters Appear in Path by emav

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.