Berkeley Software Distribution

Berkeley Software Distribution (BSD, sometimes called Berkeley Unix) is the UNIX derivative distributed by the University of California, Berkeley, starting in the 1970s. Historically, BSD has been considered as a branch of UNIX — 'BSD UNIX', because it had shared the initial codebase and design with the original UNIX by AT&T and collaborated on the development in the pioneer days of UNIX. It was widely identified with the versions of UNIX available for workstation-class systems, that can be attributed to the ease with which it could be licensed and the familiarity it found among the founders of many technology companies during the 1980s. The familiarity often came from using similar systems — notably  DEC's ULTRIX and Sun Microsystems SunOS — during their education. Though BSD itself was largely superseded by the  System V Release 4 and OSF/1 systems in the 1990s (both of which incorporated BSD code), the modified codebase as open source — mostly derived from 4.4BSD-Lite have seen increasing use and development recently.
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Berkeley Software Distribution, abrégé en BSD, désigne en informatique une famille de systèmes d'exploitation Unix, développés à l'université de Berkeley par un groupe de programmeurs : Bill Joy, Marshall Kirk McKusick, Kenneth Thompson etc.
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Die Berkeley Software Distribution (BSD) ist eine Version des Betriebssystems Unix, die an der Universität von Kalifornien in Berkeley ab 1977 entstanden ist. BSD basiert auf AT&Ts Unix Sixth Edition (V6) und Seventh Edition (V7), die ab 1975 (V6) bzw. 1979 (V7) den Universitäten zum Preis der Datenträger zur Verfügung gestellt wurden, verbunden mit der Erlaubnis, den Quellcode einzusehen und zu modifizieren. Inzwischen ist der komplette Quellcode umgeschrieben, und es gibt keine einzige Zeile AT&T-Quellcode in aktuellen BSD-Distributionen.
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BSD (ang. Berkeley Software Distribution, czasami nazywany Berkeley Unix) - odmiana systemu operacyjnego Unix wywodząca się ze stworzonych na Uniwersytecie Kalifornijskim Berkeley rozszerzeń dla systemu rozwijanego przez firmę AT&T. Także potoczna nazwa licencji BSD, na której te systemy są wydawane, oraz pokrewnych licencji tego typu (np. licencja MIT).
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L'acronimo BSD (Berkeley Software Distribution) indica la variante originaria di Unix sviluppata presso l'università di Berkeley in California e alla base di una delle due famiglie principali di sistemi operativi liberi attualmente più diffusi, tra cui gli esponenti più noti sono OpenBSD, FreeBSD, NetBSD, PC-BSD, DesktopBSD, FreeSBIE, DarwinOS il cuore unix di Mac OS X e DragonFly BSD con le sue distribuzioni FireflyBSD e GoBSD.
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