|
BSD Daemon
The BSD Daemon, nicknamed Beastie, is the generic mascot of BSD operating systems. The BSD Daemon is named after '' software daemons'', a class of long-running computer programs in Unix-like operating systems—which, through a play on words, takes the cartoon shape of a demon. The BSD Daemon's nickname ''Beastie'' is a slurred phonetic (in American English) pronunciation of ''BSD''. Beastie customarily carries a trident to symbolize a software daemon's forking of processes. The FreeBSD web site has noted Evi Nemeth's 1988 remarks about cultural-historical daemons in the ''Unix System Administration Handbook'': "The ancient Greeks' concept of a 'personal daemon' was similar to the modern concept of a 'guardian angel' ... As a rule, UNIX systems seem to be infested with both daemons and demons." Copyright The copyright on the official BSD Daemon images is owned by Marshall Kirk McKusick, a very early BSD developer who worked with Bill Joy. McKusick has freely licensed the masc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phil Foglio
Philip Peter Foglio (born May 1, 1956) is an American cartoonist and comic book artist known for his humorous science fiction and fantasy art. Early life and career Foglio was born on May 1, 1956, in Mount Vernon, New York, and moved with his family to Hartsdale, New York, where he lived until he was 17. He attended the Chicago Academy of Fine Arts in Chicago, Illinois, and was a member of the university's science fiction club, art-directing and co-editing the group's science fiction fanzine, fanzine, ''Effen Essef''. He was nominated for both the Hugo Award for Best Fan Artist and the Hugo Award for Best Dramatic Presentation in 1976, and won ''Best Fan Artist'' in 1977 and 1978. After living in the DePaul dorms for a few years, Phil moved to the Rogers Park neighborhood of Chicago and hosted weekly Thursday night meetings of Chicago-area science fiction fandom, science fiction fans. He drew the first known Unix BSD daemon, daemons for a limited series of T-shirts in 1979. Begin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bill Joy
William Nelson Joy (born November 8, 1954) is an American computer engineer and venture capitalist. He co-founded Sun Microsystems in 1982 along with Scott McNealy, Vinod Khosla, and Andy Bechtolsheim, and served as Chief Scientist and CTO at the company until 2003. He played an integral role in the early development of BSD UNIX while being a graduate student at Berkeley, and he is the original author of the vi text editor. He also wrote the 2000 essay " Why The Future Doesn't Need Us", in which he expressed deep concerns over the development of modern technologies. Joy was elected a member of the National Academy of Engineering (1999) for contributions to operating systems and networking software. Early career Joy was born in the Detroit suburb of Farmington Hills, Michigan, to William Joy, a school vice-principal and counselor, and Ruth Joy. He earned a Bachelor of Science in electrical engineering from the University of Michigan and a Master of Science in electrical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell Labs
Nokia Bell Labs, commonly referred to as ''Bell Labs'', is an American industrial research and development company owned by Finnish technology company Nokia. With headquarters located in Murray Hill, New Jersey, Murray Hill, New Jersey, the company operates several laboratories in the United States and around the world. As a former subsidiary of the American Telephone and Telegraph Company (AT&T), Bell Labs and its researchers have been credited with the development of radio astronomy, the transistor, the laser, the photovoltaic cell, the charge-coupled device (CCD), information theory, the Unix operating system, and the programming languages B (programming language), B, C (programming language), C, C++, S (programming language), S, SNOBOL, AWK, AMPL, and others, throughout the 20th century. Eleven Nobel Prizes and five Turing Awards have been awarded for work completed at Bell Laboratories. Bell Labs had its origin in the complex corporate organization of the Bell System telepho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urbana, Illinois
Urbana ( ) is a city in Champaign County, Illinois, United States, and its county seat. As of the 2020 census, Urbana had a population of 38,336. It is a principal city of the Champaign–Urbana metropolitan area, which had 236,000 residents in 2020. Urbana is notable for sharing the main campus of the University of Illinois with its twin city of Champaign. History The Urbana area was first settled by Europeans in 1822, when it was called "Big Grove".McGinty, Alice"The Story of Champaign-Urbana" Champaign Public Library When the county of Champaign was organized in 1833, the county seat was located on 40 acres of land, 20 acres donated by William T. Webber and 20 acres by M. W. Busey, considered to be the city's founder, and the name "Urbana" was adopted after Urbana, Ohio, the hometown of State Senator John W. Vance, who authored the Enabling Act creating Champaign County. The creation of the new town was celebrated for the first time on July 4, 1833. Stores began open ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caricature
A caricature is a rendered image showing the features of its subject in a simplified or exaggerated way through sketching, pencil strokes, or other artistic drawings (compare to: cartoon). Caricatures can be either insulting or complimentary, and can serve a political purpose, be drawn solely for entertainment, or for a combination of both. Caricatures of politicians are commonly used in newspapers and news magazines as political cartoons, while caricatures of movie stars are often found in entertainment magazines. In literature, a ''caricature'' is a distorted representation of a person in a way that exaggeration, exaggerates some characteristics and oversimplifies others. Etymology The term is derived for the Italian ''caricare''—to charge or load. An early definition occurs in the English doctor Thomas Browne's ''Christian Morals'', published posthumously in 1716. with the footnote: Thus, the word "caricature" essentially means a "loaded portrait". In 18th-centu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
/dev/null
In some operating systems, the null device is a device file that discards all data written to it but reports that the write operation succeeded. This device is called /dev/null on Unix and Unix-like systems, NUL: (see TOPS-20) or NUL on CP/M and DOS (internally \DEV\NUL), nul on OS/2 and newer Windows systems (internally \Device\Null on Windows NT), NIL: on Amiga operating systems, and NL: on OpenVMS. In Windows Powershell, the equivalent is $null. It provides no data to any process that reads from it, yielding EOF immediately. In IBM operating systems DOS/360 and successors and also in OS/360 and successors such files would be assigned in JCL to DD DUMMY. In programmer jargon, especially Unix jargon, it may also be called the bit bucket or black hole. History is described as an empty regular file in Version 4 Unix. The Version 5 Unix manual describes a device with modern semantics. Usage The null device is typically used for disposing of unwanted output streams of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fork (operating System)
In computing, particularly in the context of the Unix operating system and its workalikes, fork is an operation whereby a process creates a copy of itself. It is an interface which is required for compliance with the POSIX and Single UNIX Specification standards. It is usually implemented as a C standard library wrapper to the fork, clone, or other system calls of the kernel. Fork is the primary method of process creation on Unix-like operating systems. Overview In multitasking operating systems, processes (running programs) need a way to create new processes, e.g. to run other programs. Fork and its variants are typically the only way of doing so in Unix-like systems. For a process to start the execution of a different program, it first forks to create a copy of itself. Then, the copy, called the "child process", makes any environment changes the child will need and then calls the exec system call to overlay itself with the new program: it ceases execution of its former prog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daemon (computing)
In computing, a daemon is a program that runs as a background process, rather than being under the direct control of an interactive user. Customary convention is to name a daemon process with the letter ''d'' as a suffix to indicate that it's a daemon. For example, is a daemon that implements system logging facility, and is a daemon that serves incoming SSH connections. Even though the concept can apply to many computing systems, the term ''daemon'' is used almost exclusively in the context of Unix-based systems. In other contexts, different terms are used for the same concept. Systems often start daemons at boot time that will respond to network requests, hardware activity, or other programs by performing some task. Daemons such as cron may also perform defined tasks at scheduled times. Terminology In the context of computing, the word is generally pronounced either as or . The term was coined by the programmers at MIT's Project MAC. According to Fernando J. Cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pipe (Unix)
In Unix-like computer operating systems, a pipeline is a mechanism for inter-process communication using message passing. A pipeline is a set of processes chained together by their standard streams, so that the output text of each process ('' stdout'') is passed directly as input (''stdin'') to the next one. The second process is started as the first process is still executing, and they are executed concurrently. The concept of pipelines was championed by Douglas McIlroy at Unix's ancestral home of Bell Labs, during the development of Unix, shaping its toolbox philosophy. It is named by analogy to a physical pipeline. A key feature of these pipelines is their "hiding of internals". This in turn allows for more clarity and simplicity in the system. The pipes in the pipeline are anonymous pipes (as opposed to named pipes), where data written by one process is buffered by the operating system until it is read by the next process, and this uni-directional channel disappears when t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UNIX
Unix (, ; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. Initially intended for use inside the Bell System, AT&T licensed Unix to outside parties in the late 1970s, leading to a variety of both academic and commercial Unix variants from vendors including University of California, Berkeley ( BSD), Microsoft (Xenix), Sun Microsystems ( SunOS/ Solaris), HP/ HPE ( HP-UX), and IBM ( AIX). The early versions of Unix—which are retrospectively referred to as " Research Unix"—ran on computers such as the PDP-11 and VAX; Unix was commonly used on minicomputers and mainframes from the 1970s onwards. It distinguished itself from its predecessors as the first portable operating system: almost the entire operating system is written in the C programming language (in 1973), which allows U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PDP-11
The PDP–11 is a series of 16-bit minicomputers originally sold by Digital Equipment Corporation (DEC) from 1970 into the late 1990s, one of a set of products in the Programmed Data Processor (PDP) series. In total, around 600,000 PDP-11s of all models were sold, making it one of DEC's most successful product lines. The PDP-11 is considered by some experts to be the most popular minicomputer. The PDP–11 included a number of innovative features in its instruction set and additional general-purpose registers that made it easier to program than earlier models in the PDP series. Further, the innovative Unibus system allowed external devices to be more easily interfaced to the system using direct memory access, opening the system to a wide variety of peripherals. The PDP–11 replaced the PDP–8 in many real-time computing applications, although both product lines lived in parallel for more than 10 years. The ease of programming of the PDP–11 made it popular for general-pur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instant Film
Instant film is a type of photographic film that was introduced by Polaroid Corporation to produce a visible image within minutes or seconds of the photograph's exposure. The film contains the chemicals needed for developing and fixing the photograph, and the camera exposes and initiates the developing process after a photo has been taken. In earlier Polaroid instant cameras the film is pulled through rollers, breaking open a pod containing a reagent that is spread between the exposed negative and receiving positive sheet. This film sandwich develops for some time after which the positive sheet is peeled away from the negative to reveal the developed photo. In 1972, Polaroid introduced ''integral film'', which incorporated timing and receiving layers to automatically develop and fix the photo without any intervention from the photographer. Instant film has been available in sizes from (similar to 135 film) up to size, with the most popular film sizes for consumer snapshots ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
