Sixth Edition Unix, also called Version 6 Unix or just V6, was the first version of the Unix operating system to see wide release outside Bell Labs. It was released in May 1975. Since source code was available and the license was not explicit enough to forbid it, V6 was taken up as a teaching tool, notably by the University of California, Berkeley and the University of New South Wales (UNSW).

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  • Sixth Edition Unix, also called Version 6 Unix or just V6, was the first version of the Unix operating system to see wide release outside Bell Labs. It was released in May 1975. Since source code was available and the license was not explicit enough to forbid it, V6 was taken up as a teaching tool, notably by the University of California, Berkeley and the University of New South Wales (UNSW). V6 was notable for Lions' Commentary on UNIX 6th Edition, also known as the Lions Book after its author, UNSW professor John Lions. This book was an edited selection of the main parts of the kernel as implemented for a Digital PDP-11/40, and was the main source of kernel documentation for many early Unix developers. The code has been made available under a BSD License under agreement from the SCO Group; see Ancient UNIX Systems.
  • Version 6 UnixまたはSixth Edition Unixは、ベル研究所が初めて所外に広くリリースしたUNIXオペレーティングシステムのバージョン。単にVersion 6とかV6とも呼ばれる。1975年5月にリリースされた。ソースコードが公開されており、それに関する権利が明確化されていなかったため、V6はカリフォルニア大学バークレー校やニューサウスウェールズ大学(UNSW)で教育ツールとして採用された。その後の(もっと制限されたライセンス形態でリリースされた)Version 7 Unixの成功の影に隠れた形ではあるが、V6はBSD系列のUNIXの始点となった。 V6はまた Lions' Commentary on UNIX 6th Editionという本(1976年)でも有名となった。Lions Bookとしても知られ、その著者はUNSWの教授 John Lions である。この本にはDECのPDP-11/40に実装されたV6のカーネルの主要部分のソースコードが掲載されており、多くの初期のUNIX開発者にとってカーネルに関する貴重な資料となった。 現在、V6のコードはSCOの許可によりBSDライセンスで利用可能となっている。
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  • Sixth Edition Unix, also called Version 6 Unix or just V6, was the first version of the Unix operating system to see wide release outside Bell Labs. It was released in May 1975. Since source code was available and the license was not explicit enough to forbid it, V6 was taken up as a teaching tool, notably by the University of California, Berkeley and the University of New South Wales (UNSW).
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  • Sixth Edition Unix
  • Version 6 Unix
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