Unix File System
File system used by many Unix and Unix-like operating systems / From Wikipedia, the free encyclopedia
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This article is about the file system implementation in some Unix and BSD operating systems. For general Unix file system principles, see Unix filesystem.
Not to be confused with Universal Flash Storage, a storage device standard with the same abbreviation.
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.
Quick Facts Developer(s), Full name ...
Developer(s) | CSRG |
---|---|
Full name | UNIX file system |
Introduced | with 4.2BSD |
Structures | |
Directory contents | tables |
Limits | |
Max volume size | 273 bytes (8 ZiB) |
Max file size | 273 bytes (8 ZiB) |
Max filename length | 255 bytes |
Features | |
Dates recorded | UFS1 and UFS2: last access time (atime), last modified time (mtime), last inode change time (ctime), UFS2: inode creation time (birthtime)[1] |
Date range | UFS1: December 14, 1901āJanuary 18, 2038, UFS2: 64-bit signed integer offset from epoch[1] |
Date resolution | UFS1 and UFS2: Nanosecond[1] |
Other | |
Supported operating systems | A/UX, DragonFly BSD, FreeBSD, FreeNAS, NAS4Free, HP-UX, NetBSD, NeXTSTEP, Linux, OpenBSD, illumos, Solaris, SunOS, Tru64 UNIX, UNIX System V, Orbis OS, and others |
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