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Unix File System

The Unix file system (UFS) is a family of file systems supported by many Unix and Unix-like operating systems. It is a distant descendant of the original filesystem used by Version 7 Unix.

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History, Implementations & History and evolution

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Explore the main themes, entities and connections around Unix File System. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Date range
UFS1: December 14, 1901–January 18, 2038, UFS2: 64-bit signed integer offset from epoch
Date resolution
UFS1 and UFS2: Nanosecond
Dates recorded
UFS1 and UFS2: last access time (atime), last modified time (mtime), last inode change time (ctime), UFS2: inode creation time (birthtime)
Developer
CSRG
Directory contents
tables
Full name
UNIX file system

Topics to explore

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Overview

Design

History and evolution

Implementations

Advanced semantic analysis

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Map overview Semantic statistics

Number of nodes, edges, triples, density and central hubs. Use it to gauge the size and connectivity of the map.

Unix File System

Nodes50
Edges49
Triples11
Avg. degree1.96
Density0.04
Components1

How this topic connects Entity context

Quick relationship hints grouped by predicate. Useful for spotting recurring semantic connections around the current entity.

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Unix File System

Top relations

Date range · 1
Unix File System → UFS1: December 14, 1901–January 18, 2038, UFS2: 64-bit signed integer offset from epoch
Date resolution · 1
Unix File System → UFS1 and UFS2: Nanosecond
Dates recorded · 1
Unix File System → UFS1 and UFS2: last access time (atime), last modified time (mtime), last inode change time (ctime), UFS2: inode creation time (birthtime)
Developer · 1
Unix File System → CSRG
Directory contents · 1
Unix File System → tables
Full name · 1
Unix File System → UNIX file system
Introduced · 1
Unix File System → with 4.2BSD
Max file size · 1
Unix File System → 273 bytes (8 ZiB)
Max filename length · 1
Unix File System → 255 bytes
Max volume size · 1
Unix File System → 273 bytes (8 ZiB)

Important terminology Word statistics

Frequent words and multi-word phrases across the lead, headings, infobox and body. Useful for terminology coverage.

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

file ufs system freebsd also unix blocks ufs2 bsd ffs block systems data filesystem openbsd directory os inodes number files

Entity relationships Subject–Predicate–Object triples

Extracted RDF-like relationships with confidence and source. The table includes structured facts and lower-confidence contextual relations.
SubjectPredicateObjectConfidenceSrc
Unix File SystemDate rangeUFS1: December 14, 1901–January 18, 2038, UFS2: 64-bit signed integer offset from epoch1.00infobox
Unix File SystemDate resolutionUFS1 and UFS2: Nanosecond1.00infobox
Unix File SystemDates recordedUFS1 and UFS2: last access time (atime), last modified time (mtime), last inode change time (ctime), UFS2: inode creation time (birthtime)1.00infobox
Unix File SystemDeveloperCSRG1.00infobox
Unix File SystemDirectory contentstables1.00infobox
Unix File SystemFull nameUNIX file system1.00infobox
Unix File SystemIntroducedwith 4.2BSD1.00infobox
Unix File SystemMax file size273 bytes (8 ZiB)1.00infobox
Unix File SystemMax filename length255 bytes1.00infobox
Unix File SystemMax volume size273 bytes (8 ZiB)1.00infobox
Unix File SystemSupported operating systemsA/UX, DragonFly BSD, FreeBSD, FreeNAS, NAS4Free, HP-UX, NetBSD, NeXTSTEP, Linux, OpenBSD, illumos, Solaris, SunOS, Tru64 UNIX, UNIX System V, Orbis OS, and others1.00infobox

Related concept clusters Concept neighborhoods

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    Connections between topic areas Semantic bridges

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