2BSD

2BSD refers to a specific category of Unix-like operating systems derived from the Berkeley Software Distribution. This particular branch is characterized by a particular set of modifications and licensing terms that distinguish it from other BSD variants. Systems falling under the 2BSD umbrella often share a common lineage and development history, influencing their feature sets and underlying architecture. The development of 2BSD has been a continuous process, with various projects contributing to its evolution over time. Understanding 2BSD requires an appreciation of its origins within the broader BSD family and the specific technical choices made by its developers. Its influence can be seen in various other operating systems and software projects that have benefited from its codebase and design principles. The term 2BSD is often used in historical or technical discussions to differentiate it from other major BSD lines such as 4.3BSD or FreeBSD, NetBSD, and OpenBSD, which emerged later and took different development paths.