What you want is called "inplace editing" in perl. Here it is, try to spot the difference to your own code: 
$^I = ".bak";
@ARGV = ('file.html');



  while(<>)
  {
      # chomp;  # don't want to loose the linebreaks
      my $string = "$_";
      my $find = "www.3sat.de/boerse/boerse_service.html";
      my $replace = "there.company.com/";
      $find = quotemeta $find;
      $string =~ s/$find/$replace/g;
      print $string;
  }

[download]

Here's what you do:

  1. Put the list of files you want to treat into @ARGV
  2. Set $^I. For every file treated, the original is saved with $^I added to the filename
  3. read from <>
  4. print to STDOUT

Perl does all the right things: it opens the files in @ARGV one by one, creates backups, and writes your output back into the original files.

P.S. Everything has already been discussed on perlmonks: see modifying and overwriting a file 

--
Brigitte    'I never met a chocolate I didnt like'    Jellinek
http://www.horus.com/~bjelli/         http://perlwelt.horus.at

In reply to Re: Read from a file and replace by bjelli
in thread Read from a file and replace by toddler

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