C:\MyWorks>diff C:\local\utils\MyClass.class C:\FileStore\phase1\MyClass.class
cygwin warning:
  MS-DOS style path detected: C:\local\utils\MyClass.class
  Preferred POSIX equivalent is: /cygdrive/c/local/utils/MyClass.class
  CYGWIN environment variable option "nodosfilewarning" turns off this warning.
  Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames

C:\MyWorks>set cygwin=nodosfilewarning

C:\MyWorks>diff C:\local\utils\MyClass.class C:\FileStore\phase1\MyClass.class

C:\MyWorks>