GNU/Linux is 'Unix-like' operating system,what is the similarities and dissimilarities between 'Unix-like' and 'Unix-based'?

[Subhamoy Roy]

GNU/Linux is 'Unix-like' operating system,what is the similarities and dissimilarities between 'Unix-like' and 'Unix-based' ? what is the similarities and dissimilarities between 'Unix' and 'GNU/Linux' ? 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-devel-discuss/attachments/20141017/a90c8147/attachment.html>