4.1BSD
E828362
4.1BSD is an early version of the Berkeley Software Distribution of Unix that introduced significant improvements in performance, networking, and system utilities, influencing later Unix and BSD derivatives.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 4.1BSD canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T9900388 — 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: 4.1BSD Context triple: [BSD, hasVariant, 4.1BSD]
-
A.
UNIX System V
UNIX System V is a major commercial version of the Unix operating system, developed by AT&T and widely influential in defining standardized Unix features and interfaces.
-
B.
TOPS-20
TOPS-20 is a mainframe time-sharing operating system from the 1970s and 1980s, known for its advanced interactive features and use on DEC’s PDP-10 systems.
-
C.
OSF/1
OSF/1 was a Unix-like operating system developed by the Open Software Foundation that integrated Mach microkernel technology with BSD and System V features for high-end workstations and servers.
-
D.
UNIX System III
UNIX System III is an early AT&T Unix operating system release that served as a key transitional version between the original Research/Version 7 Unix and the later, more standardized System V line.
-
E.
Altair DOS
Altair DOS is an early disk-based operating system developed for the MITS Altair 8800 microcomputer, providing basic file management and program loading capabilities.
- 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: 4.1BSD Target entity description: 4.1BSD is an early version of the Berkeley Software Distribution of Unix that introduced significant improvements in performance, networking, and system utilities, influencing later Unix and BSD derivatives.
-
A.
UNIX System V
UNIX System V is a major commercial version of the Unix operating system, developed by AT&T and widely influential in defining standardized Unix features and interfaces.
-
B.
TOPS-20
TOPS-20 is a mainframe time-sharing operating system from the 1970s and 1980s, known for its advanced interactive features and use on DEC’s PDP-10 systems.
-
C.
OSF/1
OSF/1 was a Unix-like operating system developed by the Open Software Foundation that integrated Mach microkernel technology with BSD and System V features for high-end workstations and servers.
-
D.
UNIX System III
UNIX System III is an early AT&T Unix operating system release that served as a key transitional version between the original Research/Version 7 Unix and the later, more standardized System V line.
-
E.
Altair DOS
Altair DOS is an early disk-based operating system developed for the MITS Altair 8800 microcomputer, providing basic file management and program loading capabilities.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Berkeley Software Distribution
ⓘ
Unix operating system ⓘ computer operating system version ⓘ |
| basedOn | 4BSD ⓘ |
| codename | 4.1BSD ⓘ |
| developedAt | University of California, Berkeley ⓘ |
| developer |
Computer Systems Research Group
ⓘ
University of California, Berkeley ⓘ |
| distributionModel | source code distribution to Unix licensees ⓘ |
| follows | 4BSD ⓘ |
| genre |
multitasking operating system
ⓘ
multiuser operating system ⓘ |
| hasPart |
C compiler
ⓘ
Unix shell ⓘ standard Unix utilities ⓘ |
| historicalPeriod | early BSD Unix era ⓘ |
| influenced |
4.2BSD
ⓘ
4.3BSD ⓘ Unix derivatives ⓘ
linked to:
Unix-like systems
later BSD derivatives ⓘ |
| introducedFeature |
enhanced virtual memory performance
ⓘ
improved system utilities ⓘ kernel performance tuning ⓘ performance improvements over 4BSD ⓘ |
| kernelType | monolithic kernel ⓘ |
| license | proprietary Unix license from AT&T ⓘ |
| majorRelease | early 1980s ⓘ |
| notableFor |
being an early Berkeley Unix release
ⓘ
laying groundwork for BSD networking developments ⓘ |
| operatingSystemFamily |
BSD
ⓘ
Unix ⓘ |
| partOf |
Berkeley Software Distribution series
ⓘ
linked to:
BSD
|
| platform |
PDP-11
ⓘ
VAX ⓘ |
| precedes | 4.2BSD ⓘ |
| programmingLanguage |
C
ⓘ
assembly language ⓘ |
| releaseDate | 1981 ⓘ |
| sourceModel | proprietary with source available ⓘ |
| status | historical, no longer maintained ⓘ |
| supports |
C programming environment
ⓘ
multiuser access ⓘ time-sharing ⓘ |
| targetAudience |
academic institutions
ⓘ
research laboratories ⓘ technical computing users ⓘ |
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: 4.1BSD Description of subject: 4.1BSD is an early version of the Berkeley Software Distribution of Unix that introduced significant improvements in performance, networking, and system utilities, influencing later Unix and BSD derivatives.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.