s/\bservername(?:\.aa\.company(?:\.zzzz)?\.com)?\b/NEWNAME.\com/gi; #### sub NameReplace { if( $_ =~ /\.(?:html?|cfm|cfml|cgi|js|pl)$/) { my $name = $File::Find::name; open ( F, $name ) || warn "$!: $name\n"; $data=join '',; close (F); if ($data=~ s/\bservername(?:\.aa\.company(?:\.zzzz)?\.com)?\b/NEWNAME.\com/gi) { if (open (F, ">$name")) { print F,$data; close(F); } else { warn "..." } } } }