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Kirk McKusick
Marshall Kirk McKusick (born January 19, 1954) is an American computer scientist, known for his extensive work on BSD UNIX, from the 1980s to FreeBSD in the present day. He served on the board of the USENIX Association from 1986 to 1992 and again from 2000 to 2006, including terms as president from 1990 to 1992 and 2000 to 2002. He served on the editorial board of ''ACM Queue'' Magazine from 2002 to 2019. He served on the board of the FreeBSD Foundation from 2012 to 2022. He is known to friends and colleagues as "Kirk". McKusick lives in California with Eric Allman, his partner since graduate school, whom he married in October, 2013. Education McKusick received his B.S. in electrical engineering from Cornell University, and two M.S. degrees (in 1979 and 1980 respectively) and a Ph.D. in computer science from the University of California, Berkeley in 1984. BSD McKusick started with BSD by virtue of the fact that he shared an office at Berkeley with Bill Joy, who spearhead ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilmington, Delaware
Wilmington is the List of municipalities in Delaware, most populous city in the U.S. state of Delaware. The city was built on the site of Fort Christina, the first Swedish colonization of the Americas, Swedish settlement in North America. It lies at the confluence of the Christina River and Brandywine Creek (Christina River tributary), Brandywine Creek, near where the Christina flows into the Delaware River. It is the county seat of New Castle County, Delaware, New Castle County and one of the major cities in the Delaware Valley metropolitan area. Wilmington was named by Proprietor Thomas Penn after his friend Spencer Compton, 1st Earl of Wilmington, who was Prime Minister of the United Kingdom, prime minister during the reign of George II of Great Britain. As of the 2020 United States census, 2020 census, the city's population was 70,898. Wilmington is part of the Delaware Valley metropolitan statistical area (which also includes Philadelphia, Reading, Pennsylvania, Reading, Cam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Master Of Science
A Master of Science (; abbreviated MS, M.S., MSc, M.Sc., SM, S.M., ScM or Sc.M.) is a master's degree. In contrast to the Master of Arts degree, the Master of Science degree is typically granted for studies in sciences, engineering and medicine and is usually for programs that are more focused on scientific and mathematical subjects; however, different universities have different conventions and may also offer the degree for fields typically considered within the humanities and social sciences. While it ultimately depends upon the specific program, earning a Master of Science degree typically includes writing a thesis. The Master of Science degree was introduced at the University of Michigan in 1858. One of the first recipients of the degree was De Volson Wood, who was conferred a Master of Science degree at the University of Michigan in 1859. Algeria Algeria follows the Bologna Process. Australia Australian universities commonly have coursework or research-based Master o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Neville-Neil
George may refer to: Names * George (given name) * George (surname) People * George (singer), American-Canadian singer George Nozuka, known by the mononym George * George Papagheorghe, also known as Jorge / GEØRGE * George, stage name of Giorgio Moroder * George, son of Andrew I of Hungary Places South Africa * George, South Africa, a city ** George Airport United States * George, Iowa, a city * George, Missouri, a ghost town * George, Washington, a city * George County, Mississippi * George Air Force Base, a former U.S. Air Force base located in California Computing * George (algebraic compiler) also known as 'Laning and Zierler system', an algebraic compiler by Laning and Zierler in 1952 * GEORGE (computer), early computer built by Argonne National Laboratory in 1957 * GEORGE (operating system), a range of operating systems (George 1–4) for the ICT 1900 range of computers in the 1960s * GEORGE (programming language), an autocode system invented by Charles Leonard Hamblin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keith Bostic (software Engineer)
Keith Bostic (born July 26, 1959) is an American software engineer and one of the key people in the history of Berkeley Software Distribution (BSD) Unix and open-source software. Biography In 1986, Bostic joined the Computer Systems Research Group (CSRG) at the University of California, Berkeley. He was one of the principal architects of the Berkeley 2BSD, 4.4BSD and 4.4BSD-Lite releases. Among many other tasks, he led the effort at CSRG to create a free software version of BSD Unix, which, in turn, enabled the creation of FreeBSD, NetBSD, and OpenBSD. Bostic was a founder of Berkeley Software Design Inc. (BSDi), which produced BSD/OS, a proprietary version of BSD. In 1993, the USENIX Association gave a Lifetime Achievement Award (''Flame'') to the Computer Systems Research Group, honoring 180 individuals, including Bostic, who contributed to the group's 4.4BSD-Lite release. Bostic and his wife Margo Seltzer founded Sleepycat Software in 1996 to develop and commercialize Be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Quarterman
John S. Quarterman (born April 27, 1954) is an American author and longtime Internet participant. He wrote one of the classic books about Computer network, networking prior to the commercialization of the Internet. He has also written about risk management. Biography Quarterman grew up in the Bemiss community, near Valdosta, Georgia, US. He first used the ARPANET in 1974 while attending Harvard University, Harvard, and worked on UNIX ARPANET software at BBN (the original prime contractor on the ARPANET) from 1977 to 1981. He was twice elected to the board of directors of the USENIX Association, a professional association related to the UNIX operating system. While on that board, he was instrumental in its vote in 1987 to approve the first funding received by UUNET, which, along with PSINet, became one of the first two commercial Internet Service Providers (ISPs). He co-founded the first Internet consulting firm in Texas (TIC) in 1986, and co-founded one of the first ISPs in Au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael J
Michael may refer to: People * Michael (given name), a given name * he He ..., a given name * Michael (surname), including a list of people with the surname Michael Given name * Michael (bishop elect)">Michael (surname)">he He ..., a given name * Michael (surname), including a list of people with the surname Michael Given name * Michael (bishop elect), English 13th-century Bishop of Hereford elect * Michael (Khoroshy) (1885–1977), cleric of the Ukrainian Orthodox Church of Canada * Michael Donnellan (fashion designer), Michael Donnellan (1915–1985), Irish-born London fashion designer, often referred to simply as "Michael" * Michael (footballer, born 1982), Brazilian footballer * Michael (footballer, born 1983), Brazilian footballer * Michael (footballer, born 1993), Brazilian footballer * Michael (footballer, born February 1996), Brazilian footballer * Michael (footballer, born March 1996), Brazilian footballer * Michael (footballer, born 1999), Brazilian football ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel J
Samuel is a figure who, in the narratives of the Hebrew Bible, plays a key role in the transition from the biblical judges to the United Kingdom of Israel under Saul, and again in the monarchy's transition from Saul to David. He is venerated as a prophet in Judaism, Christianity, and Islam. In addition to his role in the Bible, Samuel is mentioned in Jewish rabbinical literature, in the Christian New Testament, and in the second chapter of the Quran (although the text does not mention him by name). He is also treated in the fifth through seventh books of '' Antiquities of the Jews'', written by the Jewish scholar Josephus in the first century. He is first called "the Seer" in 1 Samuel 9:9. Biblical account Family Samuel's mother was Hannah and his father was Elkanah. Elkanah lived at Ramathaim in the district of Zuph. His genealogy is also found in a pedigree of the Kohathites (1 Chronicles 6:3–15) and in that of Heman the Ezrahite, apparently his grandson (1 Chro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fsck
The system utility fsck (''file system check'') is a tool for checking the consistency of a file system in Unix and Unix-like operating systems, such as Linux Linux ( ) is a family of open source Unix-like operating systems based on the Linux kernel, an kernel (operating system), operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically package manager, pac ..., macOS, and FreeBSD. "In actuality, fsck is simply a front-end for the various filesystem checkers (fsck.fstype) available under Linux." The equivalent programs on MS-DOS and Microsoft Windows are CHKDSK, System File Checker, SFC, and SCANDISK. Use Generally, fsck is run either automatically at boot time, or manually by the system administrator. The command works directly on data structures stored on disk, which are internal and specific to the particular file system in use - so an fsck command tailored to the file system is generally required. The exact behaviors of variou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snapshot (computer Storage)
In Computer, computer systems, a snapshot is the State (computer science), state of a system at a particular point in time. The term was coined as an analogy to that in Snapshot (photography), photography. Rationale A full backup of a large data set may take a long time to complete. On Computer multitasking, multi-tasking or multi-user systems, there may be writes to that data while it is being backed up. This prevents the backup from being Atomicity (database systems), atomic and introduces a version skew that may result in data corruption. For example, if a user moves a file into a directory that has already been backed up, then that file would be completely missing on the Computer data storage, backup media, since the backup operation had already taken place before the addition of the file. Version skew may also cause corruption with files which change their size or contents underfoot while being read. One Backup#Approaches to backing up live data, approach to safely backin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Easter Egg (media)
An Easter egg is a message, image, or feature hidden in software, a video game, a film, or another—usually electronic—medium. The term used in this manner was coined around 1979 by Steve Wright, the then-Director of Software Development in the Atari Consumer Division, to describe a hidden message in the Atari video game ''Adventure (Atari 2600), Adventure'', in reference to an egg hunt, Easter egg hunt. The earliest known video game Easter egg is in the 1973 video game ''Lunar Lander (video game genre)#Graphical games, Moonlander'', in which the player tries to land a Lunar module on Moon, the Moon; if the player opts to fly the module horizontally through several of the game's screens, they encounter a McDonald's restaurant, and if they land next to it, the astronaut will visit it instead of standing next to the ship. The earliest known Easter egg in software in general is one placed in the "make" command for PDP-6/PDP-10 computers sometime in October 1967–October 1968, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magic Number (programming)
In computer programming, a magic number is any of the following: * A unique value with unexplained meaning or multiple occurrences which could (preferably) be replaced with a named constant * A constant numerical or text value used to identify a file format or protocol ) * A distinctive unique value that is unlikely to be mistaken for other meanings (e.g., Universally Unique Identifiers) Unnamed numerical constants The term ''magic number'' or ''magic constant'' refers to the anti-pattern of using numbers directly in source code. This breaks one of the oldest rules of programming, dating back to the COBOL, FORTRAN and PL/1 manuals of the 1960s. In the following example that computes the price after tax, 1.05 is considered a magic number: price_tax = 1.05 * price The use of unnamed magic numbers in code obscures the developers' intent in choosing that number, increases opportunities for subtle errors, and makes it more difficult for the program to be adapted and extended ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berkeley Fast File System
The Unix file system (UFS) is a family of file systems supported by many Unix and Unix-like operating systems. It is a distant descendant of the original filesystem used by Version 7 Unix. Design A UFS volume is composed of the following parts: * A few blocks at the beginning of the partition reserved for boot blocks (which must be initialized separately from the filesystem) * A superblock, containing a magic number identifying this as a UFS filesystem, and some other vital numbers describing this filesystem's geometry and statistics and behavioral tuning parameters * A collection of cylinder groups. Each cylinder group has the following components: ** A backup copy of the superblock ** A cylinder group header, with statistics, free lists, etc., about this cylinder group, similar to those in the superblock ** A number of inodes, each containing file attributes ** A number of data blocks Inodes are numbered sequentially, starting at 0. Inode 0 is reserved for unallocate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
