Science & technology

Creation of Berkeley Software Distribution

1977

The Berkeley Software Distribution began as a set of enhancements to AT&T's Unix operating system, written by researchers at the University of California, Berkeley, notably the graduate student Bill Joy. Early additions included the vi text editor and the C shell, and later releases added a widely used implementation of the TCP/IP networking protocols that helped build the internet. Over time Berkeley replaced the AT&T code with its own, and a legal dispute with AT&T in the early 1990s was settled before free versions could spread. The permissive BSD licence became hugely influential, and descendants such as FreeBSD, NetBSD and OpenBSD survive, with code in many other systems, including parts of macOS.

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