BSD et ses descendants

benigniyj — 2008-02-24T22:23:39Z

There are a number of Unix-like operating systems based on or descended from the Berkeley Software Distribution (BSD) series of Unix variants. The three most notable descendants in current use are FreeBSD, OpenBSD, and NetBSD, which are all derived from 386BSD and 4.4BSD-Lite, by various routes. Both NetBSD and FreeBSD started life in 1993, initially derived from 386BSD, but in 1994 migrating to a 4.4BSD-Lite code base. OpenBSD was forked in 1995 from NetBSD. Other notable derivatives include DragonFly BSD, which was forked from FreeBSD 4.8, and Apple Inc.'s Mac OS X, with its Darwin base including a large amount of code derived from FreeBSD.

Most of the current BSD operating systems are open source and available for download, free of charge, under the BSD License, the most notable exception being Mac OS X. They also generally use a monolithic kernel architecture, apart from Mac OS X and DragonFly BSD which feature hybrid kernels. The various open source BSD projects generally develop the kernel and userland programs and libraries together, the source code being managed using a single central source repository.

In the past, BSD was also used as a basis for several proprietary versions of UNIX, such as Sun's SunOS, Sequent's Dynix, NeXT's NeXTSTEP, DEC's Ultrix and OSF/1 AXP (now Tru64 UNIX). Of these, only the last is still currently supported in its original form. Parts of NeXT's software became the foundation for Mac OS X, among the most commercially successful BSD variants in the general market.

LEs BSD

benigniyj — 2008-02-23T13:00:18Z

Les systèmes BSD sont réputés pour leur organisation et leurs performances dans leurs domaines de prédilection : la fiabilité en tant que serveur pour FreeBSD, la portabilité pour NetBSD et la sécurité pour OpenBSD. Leur stabilité exceptionnelle leur permet de fonctionner sans s'arrêter ni redémarrer durant des périodes extrêmement longues (plusieurs années)[1].

Les descendants actuels de cette famille sont :

* NetBSD, descendant de 386BSD 0.1 et de 4.3BSD NET/2

o OpenBSD dérivé de NetBSD

+ OliveBSD dérivé de OpenBSD

* FreeBSD, descendant de 386BSD

o DesktopBSD

o DragonflyBSD, dérivé de FreeBSD 4.

o FreeSBIE, dérivé de FreeBSD 5.

o PC-BSD, basé sur FreeBSD 6.2, version avec interface graphique très facile à installer et utiliser

o PicoBSD, dérivé de FreeBSD 3.

* SunOS/Solaris

Darwin, le noyau de Mac OS X, comporte lui une API de type BSD au-dessus d'un micro-noyau Mach.

Dans le monde Unix, on oppose souvent les paradigmes BSD aux paradigmes Système V (POSIX), plus suivis, notamment par Linux.

Comme GNU/Linux avec Tux, la famille BSD possède une mascotte : le Démon BSD.

..

BSD et ses descendants

LEs BSD