D:\code>perl path.pl

 Program is over.

D:\code>cd x/y
D:\code\x\y>dir
 Volume in drive D is Data
 Volume Serial Number is 3241-B96B

 Directory of D:\code\x\y

22/04/2017  10:39    <DIR>          .
22/04/2017  10:39    <DIR>          ..
22/04/2017  10:39                13 z.txt
               1 File(s)             13 bytes
               2 Dir(s)  107,416,027,136 bytes free

D:\code\x\y>cat z.txt

 It's ok.

D:\code\x\y>