Tru64 UNIX is HP's (formerly Compaq; formerly DEC) 64-bit Unix operating system for the DEC Alpha AXP platform. It was previously known as Digital UNIX, and before that as OSF/1 AXP. DEC's prior UNIX product was known as Ultrix. The term software company could be applied to; a) a company that produces software or b) a company that distributes software from a third party or c) a company that provides services for software. ... A software developer is a programmer who is concerned with one or more facets of the software development process, a somewhat broader scope of computer programming. ... Digital Equipment Corporation was a pioneering company in the American computer industry. ... The Hewlett-Packard Company (NYSE: HPQ), commonly known as HP, is a very large, global company headquartered in Palo Alto, California, United States. ... International Business Machines Corporation (IBM, or colloquially, Big Blue) NYSE: IBM (incorporated June 15, 1911, in operation since 1888) is headquartered in Armonk, NY, USA. The company manufactures and sells computer hardware, software, infrastructure services and consulting services. ... Compaq was a personal computer company founded in 1982 by Rod Canion, Jim Harris and Bill Murto. ... A Unix-like operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification. ... The text below is generated by a template, which has been proposed for deletion. ... In computer engineering the kernel is the core of an operating system. ... Graphical overview of a microkernel A microkernel is a minimal form of computer operating system kernel providing a set of primitives, or system calls, to implement basic operating system services such as address space management, thread management, and inter-process communication. ... The user interface is the part of a system exposed to users. ... A software license is a type of proprietary or gratuitous license as well as a memorandum of contract between a producer and a user of computer software — sometimes called an End User License Agreement (EULA) — that specifies the perimeters of the permission granted by the owner to the user. ... Proprietary indicates that a party exercises private ownership, control or use over an item of property, usually to the exclusion of other parties. ... A software license is a type of proprietary or gratiuitious license as well as a memorandum of contract between a producer and a user of computer software — sometimes called an End User License Agreement (EULA) — that specifies the perimeters of the permission granted by the owner to the user. ... The front page of the English Wikipedia Website. ... The Hewlett-Packard Company (NYSE: HPQ), commonly known as HP, is a very large, global company headquartered in Palo Alto, California, United States. ... Compaq was a personal computer company founded in 1982 by Rod Canion, Jim Harris and Bill Murto. ... Digital Equipment Corporation was a pioneering company in the American computer industry. ... In computing, a 64-bit component is one in which data are processed or stored in 64-bit units (words). ... Wikibooks has more about this subject: Guide to UNIX Unix or UNIX is a computer operating system originally developed in the 1960s and 1970s by a group of AT&T Bell Labs employees including Ken Thompson, Dennis Ritchie, and Douglas McIlroy. ... An operating system is a special computer program that manages the relationship between application software, the wide variety of hardware that makes up a computer system, and the user of the system. ... DEC Alpha AXP 21064 Microprocessor The DEC Alpha, also known as the Alpha AXP, is a 64-bit RISC microprocessor originally developed and fabricated by Digital Equipment Corp. ... Ultrix was the brand name of Digital Equipment Corporations (DEC) native Unix systems. ...

It is unusual among common commercial UNIX implementations in being built on the Mach kernel, sharing this characteristic with NeXTSTEP and Mac OS X. It is sometimes criticized for POSIX compatibility holes. Mach is an operating system kernel developed at Carnegie Mellon University to support operating system research, primarily distributed and parallel computation. ... NeXTSTEP Desktop NEXTSTEP is the original object-oriented, multitasking operating system that NeXT Computer, Inc. ... Mac OS X is an operating system developed and sold by Apple Computer which is included with all currently shipping Apple Macintosh computers. ... POSIX is the collective name of a family of related standards specified by the IEEE to define the application programming interface (API) for software compatible with variants of the Unix OS. They are formally designated as IEEE 1003 and the international standard name is ISO/IEC 9945. ...

Beginning with OSF/1, this version of UNIX booted from the SRM boot firmware on DEC Alpha-based computer systems. A screenshot of SRM loading aboot (a Linux bootloader) The SRM firmware (also called the SRM console) is the boot firmware written by Digital Equipment Corporation (DEC) for computer systems based on the Alpha AXP microprocessor. ... In computing, firmware is software that is embedded in a hardware device. ... DEC Alpha AXP 21064 Microprocessor The DEC Alpha, also known as the Alpha AXP, is a 64-bit RISC microprocessor originally developed and fabricated by Digital Equipment Corp. ...

OSF/1

In 1988, during the so-called "Unix wars", DEC joined with IBM, Hewlett-Packard, and others to form the Open Software Foundation (OSF) to develop a version of Unix to compete with System V Release 4 from AT&T and Sun Microsystems. OSF/1 was one of the first operating systems to use the Mach kernel, developed at Carnegie Mellon University, incorporating components of the BSD kernel to provide Unix compatibility. OSF/1 was to have been the third major branch of the Unix family tree, after System V and BSD. 1988 (MCMLXXXVIII) was a leap year starting on Friday of the Gregorian calendar. ... The Unix wars were the struggles between vendors of the Unix computer operating system in the late 1980s and early 1990s to set the standard for Unix henceforth. ... International Business Machines Corporation (IBM, or colloquially, Big Blue) NYSE: IBM (incorporated June 15, 1911, in operation since 1888) is headquartered in Armonk, NY, USA. The company manufactures and sells computer hardware, software, infrastructure services and consulting services. ... The Hewlett-Packard Company (NYSE: HPQ), commonly known as HP, is a very large, global company headquartered in Palo Alto, California, United States. ... The Open Software Foundation (OSF) was an organization founded in 1988 to create an open standard for an implementation of the Unix operating system. ... System V, previously known as AT&T System V, was one of the versions of the Unix computer operating system. ... AT&T Inc. ... Sun Microsystems, Inc. ... Mach is an operating system kernel developed at Carnegie Mellon University to support operating system research, primarily distributed and parallel computation. ... Carnegie Mellon University Carnegie Mellon University is a private research university located in Pittsburgh, Pennsylvania. ... BSD redirects here; for other uses see BSD (disambiguation). ... AT&T UNIX System V was one of the versions of the UNIX operating system. ... Berkeley Software Distribution (BSD, sometimes called Berkeley Unix) is the Unix derivative distributed by the University of California, Berkeley starting in the 1970s. ...

DEC's original release of OSF/1 was in 1991 for their line of MIPS-based DECstation workstations; it was never really a fully supported product and it was cancelled before the end of 1992. DEC moved OSF/1 to their new line of Alpha AXP workstations (as OSF/1 AXP), and this was the original version (V1.2) of what is most commonly known as OSF/1. 1991 (MCMXCI) was a common year starting on Tuesday of the Gregorian calendar. ... A MIPS R4400 microprocessor made by Toshiba MIPS, for Microprocessor without interlocked pipeline stages, is a RISC microprocessor architecture developed by MIPS Computer Systems Inc. ... A DECstation 5000/120 The DECstation was a brand of computers built by DEC, and refers to two distinct lines of computer systems—the first released in the 1970s as a word processing system, and the second (and more widely known) released in 1989 as computer workstations based on the... 1992 (MCMXCII) was a leap year starting on Wednesday. ... DEC Alpha AXP 21064 Microprocessor The DEC Alpha, also known as the Alpha AXP, is a 64-bit RISC microprocessor originally developed and fabricated by Digital Equipment Corp. ...

HP also worked on a product based on OSF/1 designed for early versions of their PA-RISC workstations, but this project never really got off the ground due to the complex nature of the hardware. Apple was rumored to be working on an OSF/1 version of A/UX for their PowerPC architecture, but the project never made it out of the rumor stage. IBM used OSF/1 as the basis of the AIX/ESA operating system for System 370 and System 390 mainframes [1]. PA-RISC is a microprocessor architecture developed by Hewlett-Packards Systems & VLSI Technology Operation. ... Apple Computer, Inc. ... A/UX (from Apple Unix) is Apple Computers implementation of the Unix operating system for some of their Macintosh computers. ... PowerPC is a RISC microprocessor architecture created by the 1991 Apple-IBM-Motorola alliance, known as AIM. Originally intended for personal computers, PowerPC CPUs have since become popular embedded and high-performance processors as well. ... AIX (Advanced Interactive eXecutive) is a proprietary operating system developed by IBM based on UNIX System V. Before the product was ever marketed, the acronym AIX originally stood for Advanced IBM Unix. ... The System/370 is a model range of IBM mainframes introduced in the early 1970s as the successors to the System/360 family. ... The title given to this article is incorrect due to technical limitations. ...

In 1994, after the Unix wars had splintered the Unix market, the Open Software Foundation ceased funding of research and development of OSF/1. 1994 (MCMXCIV) was a common year starting on Saturday of the Gregorian calendar, and was designated the International year of the Family. ...

Digital UNIX

After the OSF gave up on OSF/1, DEC renamed OSF/1 AXP to Digital UNIX and made it the main operating system for the company's Alpha processors. It was 64-bit and retained the basis on the Mach kernel but with components from Berkeley Software Distribution, System V, and other sources. DEC Alpha AXP 21064 Microprocessor The DEC Alpha, also known as the Alpha AXP, is a 64-bit RISC microprocessor originally developed and fabricated by Digital Equipment Corp. ... Mach is an operating system kernel developed at Carnegie Mellon University to support operating system research, primarily distributed and parallel computation. ... Berkeley Software Distribution (BSD, sometimes called Berkeley Unix) is the Unix derivative distributed by the University of California, Berkeley starting in the 1970s. ... AT&T UNIX System V was one of the versions of the UNIX operating system. ...

Tru64 UNIX

After Compaq's purchase of DEC in early 1998, Digital UNIX was renamed to Tru64 UNIX to emphasise its 64-bit-clean nature. 1998 (MCMXCVIII) was a common year starting on Thursday of the Gregorian calendar, and was designated the International Year of the Ocean. ...

Future plans

With HP's purchase of Compaq in 2002, HP announced the intention to migrate many of Tru64 UNIX's more unique features (including its file system) to HP-UX, HP's proprietary Unix. As of December 2004, however, HP appears to have cancelled this project, instead choosing to use the Veritas file system and abandon the rest of the Tru64 advanced features. In the process, many of the remaining Tru64 developers have been laid-off (made redundant). For the Cusco album, see 2002 (album). ... In computing, a file system is a method for storing and organizing computer files and the data they contain to make it easy to find and access them. ... HP-UX (Hewlett Packard UniX) is Hewlett-Packards proprietary implementation of the Unix operating system. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... The Veritas File System, or VxFS, is an extent-based file system that was developed by Veritas Software as the first commercial journaling file system. ... Downsizing refers to layoffs initiated by a company in order to cut labor costs by reducing the size of the company. ...

As of 2005 HP intends to continue selling the product through 2006 (coincident with the final shipping dates of AlphaServer hardware), with continued support up to 2011.

External links

• Tru64 UNIX - HP's official Tru64 UNIX site
• Tru64.org - Industry news, events, links, etc. related to HP's Tru64 UNIX operating system running on AlphaServers.
• Tru64 FAQ from UNIXguide.net
• Tru64 UNIX FAQ from Tru64.org
• comp.unix.tru64 - Newsgroup on running, owning and administering Tru64 UNIX (web-accessible via Google Groups)
• comp.unix.osf.osf1 - Newsgroup on running, owning and administering OSF/1 (web-accessible via Google Groups)