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unix v7是最后一个广泛发布的研究型UNIX版本

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UNIX\s-4\fG\v'-6p'TM\v'6p'\fP\s0 TIME-SHARING SYSTEM:
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UNIX PROGRAMMER'S MANUAL
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Seventh Edition, Volume \\$1
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January, 1979
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Bell Telephone Laboratories, Incorporated
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Murray Hill, New Jersey
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