Samuel J Leffler is a

computer scientist A computer scientist is a scientist who specializes in the academic study of computer science. Computer scientists typically work on the theoretical side of computation. Although computer scientists can also focus their work and research on ...

, known for his work on

BSD The Berkeley Software Distribution (BSD), also known as Berkeley Unix or BSD Unix, is a discontinued Unix operating system developed and distributed by the Computer Systems Research Group (CSRG) at the University of California, Berkeley, beginni ...

, from the 1980s to

FreeBSD FreeBSD is a free-software Unix-like operating system descended from the Berkeley Software Distribution (BSD). The first version was released in 1993 developed from 386BSD, one of the first fully functional and free Unix clones on affordable ...

in the present day. He created

HylaFAX HylaFAX is a fax server for Unix-like computer systems. It uses a client-server design and supports the sending and receiving of faxes as well as text pages, on any scale from low to very high volumes, if necessary making use of large numbers ...

, LibTIFF, and the FreeBSD Wireless Device Drivers. He co-authored the ''Design and Implementation'' series of books. While working for the

Computer Systems Research Group The Computer Systems Research Group (CSRG) was a research group at the University of California, Berkeley, that was dedicated to enhancing AT&T Unix operating system and funded by the Defense Advanced Research Projects Agency. History Profes ...

(CSRG, UC Berkeley) at

University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California), is a Public university, public Land-grant university, land-grant research university in Berkeley, California, United States. Founded in 1868 and named after t ...

, Leffler helped with 4.1 and 4.2

release. After leaving

, Leffler also worked at

Lucasfilm Lucasfilm Ltd. LLC is an American film and television production company founded by filmmaker George Lucas in December 10, 1971 in San Rafael, California, and later moved to San Francisco in 2005. It is best known for creating and producing th ...

Pixar Animation Studios Pixar (), doing business as Pixar Animation Studios, is an American animation studio based in Emeryville, California, known for its critically and commercially successful computer-animated feature films. Pixar is a subsidiary of Walt Disney S ...

Silicon Graphics Silicon Graphics, Inc. (stylized as SiliconGraphics before 1999, later rebranded SGI, historically known as Silicon Graphics Computer Systems or SGCS) was an American high-performance computing manufacturer, producing computer hardware and soft ...

Alias Research Alias may refer to: * Pseudonym, a fictitious name that a person or group assumes for a particular purpose ** Pen name, a pseudonym adopted by an author and printed on the title page or by-line of their works in place of their real name ** Stage ...

Softimage 3D Softimage 3D, stylized as Softimage, 3D, is a discontinued high-end 3D graphics application developed by Softimage, which was used predominantly in the film, broadcasting, gaming, and advertising industries for the production of 3D animation. It ...

, Cinetron Computer Systems and VMware. It while he was at Silicon Graphics that he developed HylaFAX. Later, Leffler became an independent system design consultant.

Computer Animation Rendering

*''

André and Wally B. André — sometimes transliterated as Andre — is the French and Portuguese form of the name Andrew and is now also used in the English-speaking world. It used in France, Quebec, Canada and other French-speaking countries, as well in Portugal, ...

'' (1984) texturing/matteing *''

Luxo Jr. ''Luxo Jr.'' is a 1986 American animated short film produced and released by Pixar. Written and directed by John Lasseter, the two-minute short film revolves around one larger and one smaller desk lamp. The larger lamp, named Luxo Sr., looks ...

'' (1986) rendering *''

Tin Toy A tin toy, or tin lithograph toy, is a mechanical toy made out of tinplate and colorfully painted by chromolithography to resemble primarily a character or vehicle. History Tinplate was used in the manufacture of toys beginning in the mid-19th ...

'' (1988) renderman team *''

Toy Story ''Toy Story'' is a 1995 American animated adventure comedy film produced by Pixar Animation Studios for Walt Disney Pictures. It is the first installment in the Toy Story (franchise), ''Toy Story'' franchise and the Firsts in animation, firs ...

'' (1995) modeling & animation system development/Renderman software development

References

Bibliography

* S. Leffler, M. McKusick, M. Karels, J. Quarterman: ''The Design and Implementation of the 4.3BSD UNIX Operating System'', Addison-Wesley, January 1989, . German translation published June 1990, . Japanese translation published June 1991, (out of print). * S. Leffler, M. McKusick: ''The Design and Implementation of the 4.3BSD UNIX Operating System Answer Book'', Addison-Wesley, April 1991, . Japanese translation published January 1992,

External links

Interview: Sam Leffler of the FreeBSD Foundation
{{DEFAULTSORT:Leffler, Samuel J BSD people American computer scientists Free software programmers FreeBSD people Living people Lucasfilm people Year of birth missing (living people)