The Tie::File module has an excellent way of treating a file like an array, and the synopsis provides all you need to know for basic usage :

    # This file documents Tie::File version 0.93

    tie @array, 'Tie::File', filename or die ...;

    for (@array) {
      s/PERL/Perl/g;         # Replace PERL with Perl everywhere in th
+e file
    }
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perl -MHTTP::Daemon -MHTTP::Response -MLWP::Simple -e ' ;    # The  
$d = new HTTP::Daemon and fork and getprint $d->url and exit;#spider
($c = $d->accept())->get_request(); $c->send_response( new   #in the
HTTP::Response(200,$_,$_,qq(Just another Perl hacker\n))); ' #  web
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