GNU GNU refers to GNU’s Not Unix. GNU project emphasizes on freedom and thus its logotype shows a gnu, an animal living in freedom. The GNU project was initiated by Richard M Stallman with an objective to create a system compatible to Unix but not identical with it. With time, GNU project expanded and now it is not limited to only an operating system. Now, it offers a wide range of software, including applications apart from operating system. To understand the role and contribution of GNU in free and open source software, you should be aware of its background. But if we give the history of GNU project, we shall be going beyond the scope.
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