opendir DH, "Y://perlscripts2/software/perl2/music" or die $!;
while($_ = readdir(DH)){
    ...
    if (-f $_) {

[download]

The file test will work when the value being tested is a path which can be accessed from the current directory where the program was started. As is, $_ contains only the bare file name, devoid of directory name. 

        open FH, "<$_" or die $!;
        print "output for file: $_\n";
            while (my $line = <FH>) {
                                ...
                if ($line =~ /\.txt/){
                                  ...
                }
                close FH; 
            }

[download]

A closure of the file handle while still iterating over it will result in "readline() on closed filehandle" (perl 5.16.2) error message, causing premature demise of the program. If the file handle needs to be closed early, then should skip the whole loop via last.

In reply to Re^3: I need help with opening a directory and reading files in that directory. by Anonymous Monk
in thread I need help with opening a directory and reading files in that directory. by brawal128

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.