内附8个文档。系统开发必备手册。
POSIX Base Definitions;POSIX Base Specifications, Issue 7;POSIX Rationale (Informative);POSIX® Realtime and Emeded Application Support;POSIX® Shell and Utilities;POSIX System Interfaces;POSIX Technical Corrigendum 1;POSIX Technical Corrigendum 2
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