The GNU operating system is a complete free software system, upward-compatible with Unix. GNU stands for “GNU’s Not Unix”. Richard Stallman made the Initial Announcement of the GNU Project in September 1983. A longer version called the GNU Manifesto was published in September 1985. It has been translated into several other languages.
The name “GNU” was chosen because it met a few requirements; first, it was a recursive acronym for “GNU’s Not Unix”, second, because it was a real word, and third, it was fun to say (or Sing) source via GNU
Related: Watch the Original video at GNU
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