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PCLinuxOS
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Peppermint
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Pop! OS
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PDFPostmarketOS
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PrimoPDF
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Q4OS
Q4OS
R3
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R4
R4R9
R9Raspberry Pi OS
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Red Hat Enterprise Linux
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Red Star OS
Red Star OSRemix OS
Remix OS
Return-oriented programming
Return-oriented programming
ROHピュア王座
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RSA暗号
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Sabayon Linux
Sabayon LinuxSalix OS
Salix OSSB1047
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SCO–Linux disputes
SHR (オペレーティングシステム)
SHR (operating system)
SL-164
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Slitaz
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S-N曲線
Solus
Solus (operating system)