The Tor Browser / file revision

 #! perl

 # 

 # This Source Code Form is subject to the terms of the Mozilla Public

 # License, v. 2.0. If a copy of the MPL was not distributed with this

 # file, You can obtain one at http://mozilla.org/MPL/2.0/.

 require "fastcwd.pl";

 $_ = &fastcwd;

 if (m@^/[uh]/@o || s@^/tmp_mnt/@/@o) {

     print("$_\n");

 } elsif ((($user, $rest) = m@^/usr/people/(\w+)/(.*)@o)

       && readlink("/u/$user") eq "/usr/people/$user") {

     print("/u/$user/$rest\n");

 } else {

     chop($host = `hostname`);

     print("/h/$host$_\n");

 }