1BSD

1BSD, short for the First Berkeley Software Distribution, was the first release of Berkeley Software Distribution (BSD), developed by the Computer Systems Research Group (CSRG) at the University of California, Berkeley. Issued in 1978, 1BSD marked the emergence of BSD as a distinct branch of Unix, built on top of the Unix system from AT&T and distributed for use in academic and research environments.

The release bundled a set of utilities and a kernel augmented by Berkeley programmers, laying the groundwork for the BSD lineage. 1BSD emphasized a more modular, portable set of components and contributed to early networking capabilities and system utilities that would become key features of later BSD releases.

Impact and legacy: As the first in a long line of BSD distributions, 1BSD established a development model based on university collaboration and shared source. It paved the way for successive BSD releases (2BSD, 3BSD, 4BSD) and influenced the design of later BSD-derived operating systems, such as FreeBSD, NetBSD and OpenBSD. The release helped establish BSD as a major influence in the Unix ecosystem during the late 1970s and 1980s.

See also

- Berkeley Software Distribution (BSD)

- Unix

- FreeBSD

- NetBSD

- OpenBSD