POSIX

E183310

API specification Unix standard operating system interface standard standard

POSIX is a family of standardized operating system interfaces and utilities that ensure compatibility and portability among Unix-like systems and applications.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (32)

Label	Occurrences
POSIX canonical	31
POSIX.1	6
POSIX standards	4
POSIX APIs	3
POSIX.1-2008	3
IEEE Std 1003.1	2
POSIX standard	2
POSIX.1 standard	2
POSIX.1b	2
POSIX.1c	2
POSIX.2	2
Portable Operating System Interface	2
X/Open Portability Guide	2
IEEE 1003 family of standards	1
IEEE POSIX committees	1
IEEE Std 1003.2	1
ISO/IEC 9945	1
Linux standard base–related interfaces	1
POSIX API	1
POSIX make	1
POSIX system interfaces	1
POSIX threading API	1
POSIX threads	1
POSIX threads (pthreads)	1
POSIX.1-1988	1
POSIX.1-1990	1
POSIX.1-2001	1
POSIX.1c threads	1
POSIX.1d	1
POSIX.1j	1
POSIX.4	1
System V Interface Definition	1

How this entity was disambiguated

This entity first appeared as the object of triple T1611993 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: POSIX
Context triple: [Unix, influenced, POSIX]

A. GNU C Library
The GNU C Library (glibc) is the GNU Project’s core implementation of the standard C library, providing fundamental system call wrappers and APIs used by most GNU/Linux and Unix-like systems.
B. Unix
Unix is a powerful, multiuser, multitasking operating system originally developed in the 1970s that has profoundly influenced modern computing and inspired many derivative systems like Linux and macOS.
C. GNU Hurd
GNU Hurd is the GNU Project’s microkernel-based operating system server collection intended as a free Unix-like replacement, built to run on top of the Mach microkernel.
D. Solaris operating system
Solaris operating system is a Unix-based enterprise operating system known for its scalability, robustness, and advanced features such as ZFS, DTrace, and strong support for SPARC and x86 architectures.
E. ISO/IEC 9899
ISO/IEC 9899 is the international standard that defines the C programming language’s syntax, semantics, and library.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: POSIX
Target entity description: POSIX is a family of standardized operating system interfaces and utilities that ensure compatibility and portability among Unix-like systems and applications.

A. GNU C Library
The GNU C Library (glibc) is the GNU Project’s core implementation of the standard C library, providing fundamental system call wrappers and APIs used by most GNU/Linux and Unix-like systems.
B. Unix
Unix is a powerful, multiuser, multitasking operating system originally developed in the 1970s that has profoundly influenced modern computing and inspired many derivative systems like Linux and macOS.
C. GNU Hurd
GNU Hurd is the GNU Project’s microkernel-based operating system server collection intended as a free Unix-like replacement, built to run on top of the Mach microkernel.
D. Solaris operating system
Solaris operating system is a Unix-based enterprise operating system known for its scalability, robustness, and advanced features such as ZFS, DTrace, and strong support for SPARC and x86 architectures.
E. ISO/IEC 9899
ISO/IEC 9899 is the international standard that defines the C programming language’s syntax, semantics, and library.
F. None of above. chosen

Statements (55)

Predicate	Object
instanceOf	API specification ⓘ Unix standard ⓘ operating system interface standard ⓘ standard ⓘ
abbreviationOf	POSIX self-linksurface differs ⓘ surface form: Portable Operating System Interface
aimsTo	ensure application portability across Unix-like systems ⓘ ensure source code compatibility ⓘ
appliesTo	BSD operating systems ⓘ Linux ⓘ Unix-like operating systems ⓘ macOS ⓘ
basedOn	Unix ⓘ surface form: UNIX
codifiedAs	POSIX self-linksurface differs ⓘ surface form: IEEE 1003 family of standards
coordinatedBy	Austin Group ⓘ
defines	application programming interfaces ⓘ command line utilities ⓘ file system semantics ⓘ networking interfaces ⓘ process control interfaces ⓘ shell behavior ⓘ signals interface ⓘ system call interfaces ⓘ threading interfaces ⓘ
developedBy	Institute of Electrical and Electronics Engineers ⓘ surface form: IEEE International Organization for Standardization ⓘ surface form: ISO The Open Group ⓘ
ensures	compatibility between applications and operating systems ⓘ
firstStandardizedIn	1980s ⓘ
fullName	POSIX self-linksurface differs ⓘ surface form: Portable Operating System Interface
hasISOIdentifier	POSIX self-linksurface differs ⓘ surface form: ISO/IEC 9945
hasVersion	POSIX self-linksurface differs ⓘ surface form: IEEE Std 1003.1 POSIX self-linksurface differs ⓘ surface form: IEEE Std 1003.2
includes	POSIX self-linksurface differs ⓘ surface form: POSIX.1 POSIX self-linksurface differs ⓘ surface form: POSIX.1-2001 POSIX self-linksurface differs ⓘ surface form: POSIX.1-2008 POSIX self-linksurface differs ⓘ surface form: POSIX.1b POSIX self-linksurface differs ⓘ surface form: POSIX.1c POSIX self-linksurface differs ⓘ surface form: POSIX.1d POSIX self-linksurface differs ⓘ surface form: POSIX.1j POSIX.1q ⓘ POSIX self-linksurface differs ⓘ surface form: POSIX.2
includesConcept	asynchronous I/O ⓘ real-time extensions ⓘ sockets API ⓘ threads ⓘ
influenced	Single UNIX Specification ⓘ
languageBinding	C ⓘ surface form: C programming language
maintainedBy	Austin Group ⓘ
namedBy	Richard Stallman ⓘ
provides	portable programming interface ⓘ
relatedTo	Single UNIX Specification ⓘ
standardizedBy	Institute of Electrical and Electronics Engineers ⓘ surface form: IEEE The Open Group ⓘ
supports	multi-user environments ⓘ multitasking ⓘ

How these facts were elicited

Referenced by (82)

Full triples — surface form annotated when it differs from this entity's canonical label.

Unix → influenced → POSIX ⓘ

Unix → standardizedBy → POSIX ⓘ

z/OS → supportsStandard → POSIX ⓘ

IBM RS/6000 systems → supportsStandard → POSIX ⓘ

subject surface form: IBM RS/6000

AIX → supportsStandard → POSIX ⓘ

XNU → supportsFeature → POSIX ⓘ

this entity surface form: POSIX APIs

Darwin → supportsStandard → POSIX ⓘ

GDB → supportsStandard → POSIX ⓘ

GNU C Library → provides → POSIX ⓘ

this entity surface form: POSIX threading API

GNU C Library → supportsStandard → POSIX ⓘ

GNU Make → compatibleWith → POSIX ⓘ

this entity surface form: POSIX make

GNU Findutils → supportsStandard → POSIX ⓘ

Solaris operating system → supports → POSIX ⓘ

subject surface form: Solaris

this entity surface form: POSIX threads

HP-UX → supportsStandard → POSIX ⓘ

FreeBSD → supportsStandard → POSIX ⓘ

Dash → conformsTo → POSIX ⓘ

this entity surface form: POSIX.1-2008

IRIX operating system → supports → POSIX ⓘ

subject surface form: IRIX

Rock Ridge → supportsEnvironment → POSIX ⓘ

Unix file(1) utility → standard → POSIX ⓘ

subject surface form: file (Unix)

NetBSD → supportsStandard → POSIX ⓘ

System V derivatives → influenced → POSIX ⓘ

this entity surface form: POSIX standards

System V derivatives → contributedTo → POSIX ⓘ

this entity surface form: System V Interface Definition

System V derivatives → standardizedBy → POSIX ⓘ

this entity surface form: IEEE POSIX committees

POSIX → fullName → POSIX self-linksurface differs ⓘ

this entity surface form: Portable Operating System Interface

POSIX → abbreviationOf → POSIX self-linksurface differs ⓘ

this entity surface form: Portable Operating System Interface