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The Single UNIX Specification Interface Tables

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This web page contain tables of interfaces defined in the Single UNIX Specification Versions 2, 3 and 4 complete with an indication of their availability in other related standards, such as UNIX 98, UNIX 95, the ISO POSIX-1 standard, the ISO POSIX-2 standard, the ISO C standard, SVID3 and 4.3BSD.

These are available as a number of pdf files:

• Version 4 Interface Tables.
• Version 3 Interface Tables.
• Version 2 Interface Tables.

These tables are intended as a quick reference guide for programmers migrating or developing applications for the Single UNIX Specification. Products that certify to the Single UNIX Specification may not provide all of the interfaces listed, depending on which feature groups are supported.