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

[Gunnar Hjalmarsson]

On 2014-10-17 12:09, Subhamoy Roy wrote:
> 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' ?

https://www.google.se/?#q=unix+linux+difference

Please note that this is not an 'ask for help with anything' list. It's
for discussing the development of Ubuntu.

-- 
Gunnar Hjalmarsson
https://launchpad.net/~gunnarhj