my $h_orig = {
    '/a/b/c/dt/data/SUSE/tool/0.9.0' => '/a/b/c/dt/tools/SUSE/tool/0.9.0',
    '/nfs/us/tools/SUSE'             => '/usr/bin',
    '/a/b/c'                         => '/p',
    '/p/dt'                          => '/nfs/us'};


##</code><code>##

my $h_orig = { '/a' => '/b/c',
               '/b/c' => '/a',
               };