Ultrix
E701313
Ultrix is a discontinued UNIX-based operating system developed by Digital Equipment Corporation for its VAX and later MIPS-based computer systems.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Ultrix canonical | 6 |
| Ultrix File System | 1 |
| Ultrix device drivers | 1 |
| Ultrix networking utilities | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7894633 — 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: Ultrix Context triple: [VAX, operatingSystem, Ultrix]
-
A.
Xenix
Xenix was a Microsoft-licensed, business-oriented version of the Unix operating system that ran on microcomputers in the late 1970s and 1980s.
-
B.
Prime Computer
Prime Computer was a U.S. minicomputer manufacturer prominent in the 1970s and 1980s, known for its PRIMOS operating system and 16-bit and 32-bit business systems.
-
C.
RISC OS
RISC OS is a graphical, ARM-based operating system originally created for Acorn's Archimedes computers, known for its efficiency and distinctive desktop environment.
-
D.
Hurd
Hurd is an English surname borne by various notable figures, including politicians, athletes, and artists.
-
E.
RSX-11
RSX-11 is a family of real-time, multi-user operating systems for PDP-11 minicomputers, widely used in industrial and embedded applications in the 1970s and 1980s.
- 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: Ultrix Target entity description: Ultrix is a discontinued UNIX-based operating system developed by Digital Equipment Corporation for its VAX and later MIPS-based computer systems.
-
A.
Xenix
Xenix was a Microsoft-licensed, business-oriented version of the Unix operating system that ran on microcomputers in the late 1970s and 1980s.
-
B.
SINIX
SINIX is a Unix operating system developed by Siemens as a variant of AT&T's System V for its own hardware platforms.
-
C.
RT-11
RT-11 is a real-time operating system developed by Digital Equipment Corporation for its PDP-11 series of 16-bit minicomputers.
-
D.
Prime Computer
Prime Computer was a U.S. minicomputer manufacturer prominent in the 1970s and 1980s, known for its PRIMOS operating system and 16-bit and 32-bit business systems.
-
E.
RISC OS
RISC OS is a graphical, ARM-based operating system originally created for Acorn's Archimedes computers, known for its efficiency and distinctive desktop environment.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | Unix-like operating system ⓘ |
| architecture |
MIPS architecture
ⓘ
linked to:
MIPS
VAX architecture ⓘ |
| basedOn |
4.2BSD
ⓘ
4.3BSD ⓘ |
| defaultShell |
Bourne shell
ⓘ
C shell ⓘ |
| developer |
DEC UNIX Engineering
ⓘ
Digital Equipment Corporation ⓘ |
| discontinued | true ⓘ |
| genre |
server operating system
ⓘ
workstation operating system ⓘ |
| hasComponent |
Ultrix File System
ⓘ
linked to:
Ultrix
Ultrix device drivers ⓘ
linked to:
Ultrix
Ultrix networking utilities ⓘ
linked to:
Ultrix
|
| kernelType | monolithic kernel ⓘ |
| license | proprietary software license ⓘ |
| networkStackOrigin | BSD networking code ⓘ |
| notableFor |
DEC’s first native Unix offering
ⓘ
bringing BSD Unix to DEC VAX systems ⓘ |
| operatingSystemFamily |
UNIX
ⓘ
linked to:
Unix
|
| platform |
DECstation
ⓘ
DECsystem ⓘ
linked to:
DECsystem-10
MIPS ⓘ VAX ⓘ VAXserver ⓘ VAXstation ⓘ |
| sourceModel | closed source ⓘ |
| successor |
Digital UNIX
ⓘ
OSF/1 for DEC systems ⓘ
linked to:
OSF/1
Tru64 UNIX ⓘ |
| supports |
Berkeley sockets API
ⓘ
linked to:
BSD sockets API
C programming language environment ⓘ Fortran programming environment ⓘ NFS ⓘ System V IPC features ⓘ TCP/IP networking ⓘ UFS file system ⓘ X Window System ⓘ
linked to:
X11
multi-user operation ⓘ multitasking ⓘ time-sharing ⓘ virtual memory ⓘ |
| targetMarket |
minicomputers
ⓘ
servers ⓘ workstations ⓘ |
| userInterface | command-line interface ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Ultrix Description of subject: Ultrix is a discontinued UNIX-based operating system developed by Digital Equipment Corporation for its VAX and later MIPS-based computer systems.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ultrix
linked to: Ultrix
linked to: Ultrix