# ISO/IEC 9945-1:1996 — Withdrawn and superseded ISO standards

For ISO/IEC 9945-1:1996, item title is Information technology — Portable Operating System Interface (POSIX) — Part 1: System Application Program Interface (API) [C Language]; status code is 9599; successor is ISO/IEC 9945-3:2002 | ISO/IEC 9945-4:2002 | ISO/IEC FCD 9945.2 | ISO/IEC 9945-1:2002 | ISO/IEC 9945-2:2002; withdrawn / published date is 1996-11-28, recorded from its source on 2026-08-05.

- **Identifier:** ISO/IEC 9945-1:1996 _(verified: appears in the quote below)_
- **Item title:** Information technology — Portable Operating System Interface (POSIX) — Part 1: System Application Program Interface (API) [C Language] _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 9945-3:2002 | ISO/IEC 9945-4:2002 | ISO/IEC FCD 9945.2 | ISO/IEC 9945-1:2002 | ISO/IEC 9945-2:2002
- **Withdrawn / published date:** 1996-11-28 _(verified: appears in the quote below)_

## What the source says

> 24426,IS,,ISO/IEC 9945-1:1996,Information technology — Portable Operating System Interface (POSIX) — Part 1: System Application Program Interface (API) [C Language],Technologies de l'information — Interface pour la portabilité des systèmes (POSIX) — Partie 1: Interface programme de systèmes d'application (API) [Langage C],1996-11-28,2,['35.060'],ISO/IEC JTC 1/SC 22,9599,[17840],"[37314,37315,34698,37312,37313]",['en'],743,"<p>Is part of the POSIX series of standards for applications and user interfaces to open systems. It defines the applications interface to basic system services for input/output, file system access, and process management.</p>"

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).