Unix File System
| 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) |
| Date range | UFS1: December 14, 1901–January 18, 2038, UFS2: 64-bit signed integer offset from epoch |
| Date resolution | UFS1 and UFS2: Nanosecond |
| 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 |
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.