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A Practical Guide to Red Hat® Linux® 8 by Mark G. Sobell

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Appendix Summary

The IEEE POSIX committees have developed standards for programming and user interfaces, based on historical UNIX practice and new standards. Most of the standards are compromises between versions of System V and versions of BSD, with a few innovations where compromise was not possible or was technically inadvisable. The standards have met with broad acceptance from government bodies and industry organizations.

POSIX.1 standardizes C language interfaces to the core UNIX system facilities; Ada and FORTRAN versions of these interfaces are specified by POSIX.5 and POSIX.9. POSIX.2 standardizes a shell and a collection of utilities useful for scripts and interactive use, specifying how these tools should behave in international environments ...

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