Berkeley Software Distribution
| BSD | |
|---|---|
 | |
 4.3 BSD UNIX system startup and login screen from the University of Wisconsin. | |
| Developer | CSRG |
| Written in | C |
| OS family | Unix |
| Working state | Discontinued |
| Source model | Open-source |
| Initial release | March 9, 1978 |
| Final release | 4.4-Lite2 / June 1995 |
| Available in | English |
| Supported platforms | PDP-11, VAX, Intel 80386 |
| Kernel type | Monolithic |
| Userland | BSD |
| Influenced | 386BSD, NetBSD, FreeBSD, OpenBSD, NeXTSTEP, Darwin, Arch Linux |
| Influenced by | Unix |
| Default user interface | Unix shell |
| License | BSD licenses |
The Berkeley Software Distribution, also known as BSD or Berkeley UNIX, is a Unix operating system developed and distributed by the Computer Systems Research Group at the University of California, Berkeley.
BSD released in 1978, it began as an improved derivative of AT&T's original Unix developed at Bell Labs, based on the source code. Over time, BSD evolved into a distinct operating system and played a significant role in computing and the development and dissemination of Unix-like systems.