need a recursion? well then do it: 
#!/usr/bin/env perl

use warnings;
use strict;

my $curUrl = "http://localhost:8080";
my $tarUrl = "http://localhost";

my @buf;

my ($line, $f);

sub diveinto {

    print "dive into: $_[0]\n";
    opendir DIR, $_[0] or die "Could not open directory";
    my @files = readdir DIR;
    closedir DIR;

    foreach $f (@files) {
        if ($f =~ /\.{1,2}/) {next }
        print "processing: $f\n";
        if ( -d "$_[0]/$f" ) { diveinto ("$_[0]/$f") }
        else {
            open FILE, "<". "$_[0]/$f" or die "Could not open file -- 
+$_[0]/$f";
            @buf = <FILE>;
            close FILE;

            open W, ">" . "$_[0]/$f" or die "cunt open for r/w -- $_[0
+]/$f";
            foreach $line (@buf) {
                $line =~ s/$curUrl/$tarUrl/g and print "Yes";
                print W $line;
            }
            close W;
        }
    }

}

diveinto $ARGV[0];

[download]
* I leave debug 'print'-s as is to help you understand what it does. It can be shrinked twice in size.
* If it is a directory, we just call ourselves recursively
* The original loop where you trying to replace string need to write result of s///;

In reply to Re: Searching and Replacing file content within directory by fisher
in thread Searching and Replacing file content within directory by King0

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.