POSIX 官方正式 标准 (内含8个文档)
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