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.

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All labels observed (40)

Label	Occurrences
POSIX canonical	48
POSIX.1	10
POSIX APIs	7
POSIX standards	7
POSIX.1-2008	4
POSIX.2	4
IEEE Std 1003.1	3
POSIX standard	2
POSIX system interfaces	2
POSIX threads	2
POSIX.1 standard	2
POSIX.1-2001	2
POSIX.1b	2
POSIX.1c	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
MPE/iX supports POSIX compatibility	1
POSIX API	1
POSIX IPC	1
POSIX base specifications	1
POSIX make	1
POSIX threading API	1
POSIX threads (pthreads)	1
POSIX tools	1
POSIX.1 System Interfaces (XSI) extension	1
POSIX.1-1988	1
POSIX.1-1990	1
POSIX.1c threads	1
POSIX.1d	1
POSIX.1j	1
POSIX.4	1
System V Interface Definition	1
UNIX API	1
X/Open System Interfaces and Headers Issue 5	1
termios API	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	Portable Operating System Interface ⓘ linked to: POSIX
aimsTo	ensure application portability across Unix-like systems ⓘ ensure source code compatibility ⓘ
appliesTo	BSD operating systems ⓘ Linux ⓘ Unix-like operating systems ⓘ macOS ⓘ
basedOn	UNIX ⓘ linked to: Unix
codifiedAs	IEEE 1003 family of standards ⓘ linked to: POSIX
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	IEEE ⓘ linked to: Institute of Electrical and Electronics Engineers ISO ⓘ linked to: International Organization for Standardization The Open Group ⓘ
ensures	compatibility between applications and operating systems ⓘ
firstStandardizedIn	1980s ⓘ
fullName	Portable Operating System Interface ⓘ linked to: POSIX
hasISOIdentifier	ISO/IEC 9945 ⓘ linked to: POSIX
hasVersion	IEEE Std 1003.1 ⓘ linked to: POSIX IEEE Std 1003.2 ⓘ linked to: POSIX
includes	POSIX.1 ⓘ linked to: POSIX POSIX.1-2001 ⓘ linked to: POSIX POSIX.1-2008 ⓘ linked to: POSIX POSIX.1b ⓘ linked to: POSIX POSIX.1c ⓘ linked to: POSIX POSIX.1d ⓘ linked to: POSIX POSIX.1j ⓘ linked to: POSIX POSIX.1q ⓘ POSIX.2 ⓘ linked to: POSIX
includesConcept	asynchronous I/O ⓘ real-time extensions ⓘ sockets API ⓘ threads ⓘ
influenced	Single UNIX Specification ⓘ
languageBinding	C programming language ⓘ linked to: C
maintainedBy	Austin Group ⓘ
namedBy	Richard Stallman ⓘ
provides	portable programming interface ⓘ
relatedTo	Single UNIX Specification ⓘ
standardizedBy	IEEE ⓘ linked to: Institute of Electrical and Electronics Engineers The Open Group ⓘ
supports	multi-user environments ⓘ multitasking ⓘ

How these facts were elicited

Referenced by (125)

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 → supportsStandard → POSIX ⓘ

subject linked to: IBM RS/6000 systems

AIX → supportsStandard → POSIX ⓘ

XNU → supportsFeature → POSIX APIs ⓘ

linked to: POSIX

Darwin → supportsStandard → POSIX ⓘ

GDB → supportsStandard → POSIX ⓘ

GNU C Library → provides → POSIX threading API ⓘ

linked to: POSIX

GNU C Library → supportsStandard → POSIX ⓘ

GNU Make → compatibleWith → POSIX make ⓘ

linked to: POSIX

GNU Findutils → supportsStandard → POSIX ⓘ

Solaris → supports → POSIX threads ⓘ

subject linked to: Solaris operating system

linked to: POSIX

HP-UX → supportsStandard → POSIX ⓘ

FreeBSD → supportsStandard → POSIX ⓘ

Dash → conformsTo → POSIX.1-2008 ⓘ

linked to: POSIX

IRIX → supports → POSIX ⓘ

subject linked to: IRIX operating system

Rock Ridge → supportsEnvironment → POSIX ⓘ

file (Unix) → standard → POSIX ⓘ

subject linked to: Unix file(1) utility

NetBSD → supportsStandard → POSIX ⓘ

System V derivatives → influenced → POSIX standards ⓘ

linked to: POSIX

System V derivatives → contributedTo → System V Interface Definition ⓘ

linked to: POSIX

System V derivatives → standardizedBy → IEEE POSIX committees ⓘ

linked to: POSIX

POSIX → fullName → Portable Operating System Interface ⓘ

linked to: POSIX

POSIX → abbreviationOf → Portable Operating System Interface ⓘ

linked to: POSIX

POSIX → includes → POSIX.1 ⓘ

linked to: POSIX

POSIX → includes → POSIX.2 ⓘ

linked to: POSIX

POSIX → includes → POSIX.1b ⓘ

linked to: POSIX

POSIX → includes → POSIX.1c ⓘ

linked to: POSIX

POSIX → includes → POSIX.1d ⓘ

linked to: POSIX

POSIX → includes → POSIX.1j ⓘ

linked to: POSIX

POSIX → includes → POSIX.1-2001 ⓘ

linked to: POSIX

POSIX → includes → POSIX.1-2008 ⓘ

linked to: POSIX

POSIX → hasVersion → IEEE Std 1003.1 ⓘ

linked to: POSIX

POSIX → hasVersion → IEEE Std 1003.2 ⓘ

linked to: POSIX

POSIX → codifiedAs → IEEE 1003 family of standards ⓘ

linked to: POSIX

POSIX → hasISOIdentifier → ISO/IEC 9945 ⓘ

linked to: POSIX

Single UNIX Specification → relatedTo → POSIX ⓘ

Single UNIX Specification → basedOn → POSIX standards ⓘ

linked to: POSIX

Single UNIX Specification → hasComponent → X/Open Portability Guide ⓘ

linked to: POSIX

Single UNIX Specification → successorOf → X/Open Portability Guide ⓘ

linked to: POSIX

Single UNIX Specification → relatedStandard → POSIX.1 ⓘ

linked to: POSIX

Single UNIX Specification → relatedStandard → POSIX.2 ⓘ

linked to: POSIX

UNIX System V → influenced → POSIX ⓘ

ISO/IEC JTC 1/SC 22 → standardizes → POSIX system interfaces ⓘ

linked to: POSIX

ISO/IEC JTC 1/SC 22 → standardizes → Linux standard base–related interfaces ⓘ

linked to: POSIX

VxWorks → supports → POSIX APIs ⓘ

linked to: POSIX

GNU userland → compatibleWith → POSIX standard ⓘ

linked to: POSIX

OS/390 → supportsStandard → POSIX ⓘ

LynxOS → supportsStandard → POSIX ⓘ

All labels observed (40)

How this entity was disambiguated Show

Statements (55)

How these facts were elicited Show

Referenced by (125)

How this entity was disambiguated

How these facts were elicited