Your while loop is pretty useless.

while (@folder = readdir(DIR)){
    last;
}

[download]

... is basically a convoluted way of writing:

@folder = readdir(DIR);

[download]

Generally speaking, I'd recommend Path::Tiny as a much easier way of dealing with files and directories than Perl's built-ins.

use Path::Tiny 'path';

my $dir = path('/Users/Maxi/Desktop/Verzeichnis beispiel');

for my $file ($dir->children) {
   next if $file->is_dir;
   
   my $fh = $file->openr;
   while (my $line = <$fh>) {
      ...;
   }
}

[download]
use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name

In reply to Re: working with directories by tobyink
in thread working with directories by madM

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.