Cwd's getcwd simply returns what the system provides. Your shell is actually tracking the work directory separately from the system, but it provides it via $ENV{PWD}. You can use it safely as follows: 

use Cwd qw( getcwd );

sub my_getcwd {
use Cwd qw( );

sub getcwd {
   my $cwd = Cwd::getcwd();
   if (exists($ENV{PWD}) && $ENV{PWD} ne $cwd) {
      my $e = my ($e_dev, $e_node) = stat($ENV{PWD});
      my $c = my ($c_dev, $c_node) = stat($cwd);
      if ($e && $c && $e_dev == $c_dev && $e_node == $c_node) {
         $cwd = $ENV{PWD};
      }
   }

   return $cwd;
}

print Cwd::getcwd(), "\n";
print getcwd(), "\n";

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/home/ikegami/tmp

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In reply to Re: Surprising behavior of Cwd module on Unix with symlinks by ikegami
in thread Surprising behavior of Cwd module on Unix with symlinks by Anonymous Monk

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