هذا الملف موجود على ويكي كومونز, ويمكن استخدامه في مشاريع ويكيميديا الأخرى. لرؤية هذا الملف على ويكي كومنز اتبع هذا الرابط.
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Many people tell me to add some operating systems to my diagram. However my goal is not to have a complete diagram. There are many more complete diagrams on the web like http://minnie.tuhs.org/Unix_History/. My diagram is intended to be a simple representation of the historical evolution of Unix.