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UNIX
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BSD
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MS DOS
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GNU
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System 1
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Windows 1.01
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System 5
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Linux 0.1
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Windows 3.11
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Windows 95
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Mac OS 7.6
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Mac OS 9
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Mac OS X 10.0
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Windows XP
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Ubuntu 4.10
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Windows 7
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Windows 10
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macOS 10.14
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Ubuntu 18.10
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Linux 4.18