{
    sub load_modules {
        my @list = @_;
        my $out = '';
        foreach (@list)
        {
            next unless -f "/usr/lib/httpd/modules/mod_${_}.so" || 
                        -f "/usr/lib64/httpd/modules/mod_${_}.so";
            $out .= "LoadModule ${_}_module modules/mod_${_}.so\n";
        }
        return $out;
   }
   '';
}
