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(operating system)
A version of BSD Unix with an emphasis on security. A lot of security work that is ported to other free operating systems originates with OpenBSD and a lot of code review is done here.

Sub-projects of OpenBSD include implementations of SSH, ntpd, and CVS, to be called OpenCVS.

OpenBSD Home.
This article is provided by FOLDOC - Free Online Dictionary of Computing (


(Berkeley Software Distribution) The software distribution facility of the Computer Systems Research Group (CSRG) of the University of California at Berkeley. CSRG helped develop the TCP/IP protocols for DARPA and the ARPAnet and released them in the early 1980s along with the Unix source code from AT&T. BSD charged for the media, and a license from AT&T was required for use. Throughout the 1980s, this operating system release from BSD was known as "BSD Unix."

Bill Joy ran the group until 1982 when he co-founded Sun Microsystems, bringing 4.2BSD with him as the foundation of SunOS. The last BSD version released by BSD was 4.4BSD.

Many Offshoots
In the 1990s, the AT&T kernel was removed from the BSD release, and several different groups developed new kernels to replace the AT&T code.

BSD/386 and BSD/OS
In 1991, former CSRG members founded Berkeley Software Design, Inc., Colorado Springs, CO, and released BSD/386 for the Intel platform. A decade later, Wind River Systems ( acquired BSDI's software assets and turned the OS into its BSD/OS Internet Server product.

FreeBSD, NetBSD and OpenBSD
Out of all open source BSD operating systems, FreeBSD ( is the most widely used. It runs on Intel and Alpha platforms and is known for its ease of use. NetBSD ( runs on the greatest number of platforms, and OpenBSD ( is the most security-oriented. OpenBSD evolved from NetBSD and also runs on a variety of hardware. A long-established BSD support site can be found at
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References in periodicals archive ?
Data for 3 are as follows: a crystalline solid that decomposes at 95[degrees]C; [sup.1]H NMR [delta] 1.58 (d, 6.8 Hz, 3H), 4.76 (q, 6.4 Hz, 1H), 7.11 (m, 1H), and 7.78 (m, 2H) ppm; [sup.13]C NMR (CD[Cl.sub.3]) [delta] 186.9 (C1), 128.5, 133.3, 135.8, 141.5 (thienyl), 122.5 (q, 292 Hz, C[F.sub.3]), 95.1 (q, 32 Hz, C3) 51.1 (C2), and 13.3 (Me) ppm; 19F NMR (CD[Cl.sub.3])-87.5 (C[F.sub.3]) ppm; HRMS m/z [C.sub.9]H9[F.sub.3]O3S[H.sup.+] requires 255.0203, obsd 255.0297.
No Compound range % Weight loss [degrees]C Cald Obsd 1 NiC[O.sub.2]([N.sub.2][H.sub.4]) 141-385 73.13 76.43 15[(crot).sub.2].[H.sub.2]O Mol.Wt.: 297.17 2 CdC[O.sub.2]([N.sub.2][H.sub.4]) 233-398 67.30 69.24 15[(crot).sub.2].[H.sub.2]O Mol.Wt.: 298.64 S.
Today, the interface appears to be moving towards the OBSD standard, which can answer object or file requests from the s ystem, providing them with capabilities similar to the basic function of NAS devices.