What kind of virtual currency is BSD
1. BSD Berkeley software distribution (BSD) is a derivative system of UNIX, which was developed and released by UC Berkeley from 1977 to 1995. Historically, BSD has been regarded as a branch of UNIX; BSD UNIX", Because it's related to at & amp; Tunix operating system shares basic code and design
in the 1980s, many variant UNIX authorized software were derived. The famous ones are ULTRIX of Dec and SunOS of sun. In the 1990s, BSD was largely replaced by system v4. X and OSF / 1. The later BSD provided a platform for several open source software development, and has been used up to now
BSD conjecture is one of the seven most difficult mathematical problems in the world. It describes the relationship between the arithmetical and analytic properties of Abelian clusters3, BSD protocol
BSD is & quot; BerkeleySoftware Distribution" It means & quot; Berkeley software distribution & quot;. Obviously, the name BSD is not the operating system we understand now, and its original meaning is not a simple operating system, but a general term for a whole set of software distribution. The evolution from software distribution to operating system has a historical process, which is very important for FreeBSD
{rrrrrrr}
4. BSD license
BSD license was originally used in the 4.4bsd/4.4bsd Lite versions published by the University of California at Berkeley (BSD is the abbreviation of Berkly software distribution), and then graally used
In 1979, the University of California, Berkeley released BSD UNIX, which is known as the pioneer of open source. BSD license developed with BSD UNIX. BSD license is now adopted by open source software such as Apache and BSD operating system BSD protocol is a protocol that gives users a lot of freedom. BSD code encourages code sharing, but it needs to respect the right of the code author. BSD allows users to modify and redistribute code, and also allows users to use or develop commercial software on BSD code for distribution and sales. Therefore, BSD is a very friendly protocol for business integrationand many companies prefer BSD protocol when they choose open source procts, because they can completely control the third-party code and modify or redevelop it when necessary
historically, BSD was once regarded as a branch of UNIX; BSD UNIX", Because it shares basic code and design with at & T UNIX operating system. In the 1980s, BSD was widely accepted by workstation level manufacturers, and many variant UNIX authorized software were derived. Famous examples are ULTRIX of Dec and SunOS of sun. This can be attributed to the relatively loose BSD license and the fact that the founders of most technology companies established at this time are familiar with UNIX system
in the 1990s, BSD was largely replaced by system v4. X and OSF / 1 systems. The later BSD version provided a platform for the development of several open source software and has been used to this day
today, "BSD" does not refer to any BSD derivative, but is the general term of a branch of UNIX like operating system.
BSD
is stronger than stability and security, weaker than disk system performance
linux
is stronger than disk performance, stability and security are slightly weaker than FreeBSD
What are the importance of BSD? What are the uses of BSD? What is BSD
if it's web server, BSD is the first choice
if it's disk I / O demanding application
linux
is the first choice
BSD system, FreeBSD
uses OpenBSD, if it's BSD
it's recommended to use FreeBSD
because a large number of technical support documents can be found on the Internet.
What's the importance of BSD? What are the uses of BSD? What is BSD< In terms of Linux system, RHEL and CentOS are specially designed for server. Debian and fedora are more suitable for desktop applications. The choice of RHEL and CentOS depends on whether they are willing to spend money. RHEL has good after-sales service, while CentOS has to rely on itself. What is the importance of BSD? What are the uses of BSD? What is BSD
in addition, the hardware configuration of the server, especially raid, also involves the selection of the operating system. Some soft raid is not supported by RHEL
and CentOS, but supported by FreeBSD.
what is the importance of BSD? What are the uses of BSD? What is BSD? That's all for today. We'll have more in the future.
BSD is often regarded as a UNIX system at the workstation level, which is attributed to the very loose license of BSD. Many computer companies founded in the 1980s benefit from BSD, such as ULTRIX of Dec and SunOS of sun. In the 1990s, BSD was largely replaced by system v4. X and OSF / 1, but its open source version was adopted, which promoted the development of Internet< In June 1986, 4.3 BSD was released. This version mainly improves the performance of many new contributions of 4.2bsd, but the original 4.1bsd is not well coordinated. Before this version, the TCP / IP implementation of BSD was quite different from that of BBN. After several months of testing, DARPA thought that 4.2bsd was more suitable, so it was reserved in 4.3BSD After 4.3BSD, BSD graally abandoned the old VAX platform. The power 6 / 32 platform (codenamed & quot; Tahoe", It seemed promising at that time, but it was soon abandoned by their developers. Then, 4.3BSD Tahoe, which was transplanted in June 1988, performed well. BSD separates machine dependent code from machine independent code, which lays a good foundation for the portability of future systems
so far, all BSD versions have mixed exclusive at & T UNIX code, so it requires a license from at & T to continue to use. The source code license was very expensive at the time, and several other organizations were interested in a separate network code version, completely independent of at & T, so that they were not subject to the license. *** In early 1990, 4.3BSD Reno was launched. This version is a transitional version of the early development of 4.4BSD, which is jokingly called a gamble, because Reno is the gambling city of Reno, Nevada< Different BSD operating systems can be applied to various hardware architectures for different purposes and users. BSD is often seen in government agencies. Although the following BSD functions may not be unique, each BSD has graally gained a good reputation in its own field. Some focus on performance, while others are good at security
Dragonfly BSD is the youngest BSD, which provides more excellent symmetric multiprocessor system than FreeBSD, and makes the kernel support SSI cluster directly, so as to achieve better computing effect. This project has only been in this direction for a few years, mainly focusing on the i386 platform
FreeBSD is well known in BSD family for its ease of use and high performance. It is mainly used as microprocessor architecture, such as i386, amd & # 39; S 64 bit i386 extension, so FreeBSD is very concerned about multiprocessors. FreeBSD runs very well on i386 and AMD64 servers. Of course, it can also run on other hardware architectures
NetBSD has excellent portability. It can run on up to 54 platforms, ranging from embedded handheld devices to server clusters. NetBSD even serves in the international space station
OpenBSD is particularly outstanding in cryptography and security, and has good portability, which is slightly inferior to NetBSD. Security features such as openssh were pioneered by OpenBSD. OpenBSD runs as security demanding machines and is well received
it is important to note that the above list is more based on perceptual knowledge and aimed at its development focus, without strict comparison rules. In fact, each specific BSD can play many roles and tasks.