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ULTRIX is a UNIX-based† operating system made by DEC. ULTRIX has been replaced by Digital UNIX.
Intended purpose
server/mainframe: medium to high scale servers; minicomputers; mainframes
desktop/workstation: workstations (for those with UNIX familiarity)
handheld: not appropriate
real time: not appropriate
“ULTRIX is a 4.2BSD based UNIX operating system with enchancements from 4.3BSD and System V Release 2. It also includes a variety of enchancements specific to Digital hardware systems.” — Alan Rollowe100
Current Version: V4.5e100
“Depends on the target hardware, but generally; expensive. Unfortunately, the last “powers that be” in Digital priced it so that the few license sales would generate enough income to offset the development costs.“ — Alan Rollowe100
Hardware Supported: VAX, MIPSe53
“ULTRIX runs on VAX and MIPS (R2000, R3000 or R4000 series)” — Joshua Copee53
“O-VMS should run on any of the VAXen, including MicroVAX, VAXStation, and VAXServer after the MicroVAX 1. Ultrix will run on all the above, plus any of the DECStation line.” — Bruce Lanee51
Performance information about Digital products: www.compaq.com/alphaserver/download/alphaserver_gs_benchmark_performance_v2.pdf
VAX-11 assembly language is discussed in the assembly language section.
Maximum Number of Processors: 6 (in some models of VAX 6000)e100
Kernel: “Based on Berkeley 4.2BSD with enhancements from 4.3BSD and System V Release 2.” — Alan Rollowe100
POSIX: compatible
Peripherals: “Refer to the Software Product Description for the complete list of supported devices by system. Not all systems support all devices, though some offer considerable overlap.” — Alan Rollowe100
Graphics Engine: “X10 or X11 depending on the version” — Alan Rollowe100
Text Command Shell: UNIX shells
User Interface (graphic): “X10 on older versions. DECwindows on intermediate versions. Motif on current versions.” — Alan Rollowe100
Other:
Please send recommendations on additional URLs to Milo.
http://www.digital.com/info/SP2640/ “The ULTRIX Operating System, Version 4.5”e53
(Frequently Asked Questions)
ftp://ftp.digital.com/pub/Digital/dec-faq/ultrix “Ultrix FAQ”
ftp://ftp.digital.com/pub/Digital/dec-faq/common “Ultrix and DEC OSF/1 AXP FAQ”
ftp://ftp.digital.com/pub/Digital/dec-faq/ultrix-disktabs “Ultrix Disktabs”
ftp://ftp.digital.com/pub/Digital/dec-faq/ultrix-printcap “Ultrix Printcaps”
ftp://ftp.digital.com/pub/Digital/dec-faq/decinfo “DEC general FAQ”
http://hal.csn.ul.ie/pub/ultrix_freeware/ “Ultrix Freeware”; the *BIGGEST* freeware archive for ULTRIX. FTP at ftp://ftp.skynet.ie/pub/ultrix_freeware/
http://home.earthlink.net/~bhami/rosetta.html “Rosetta Stone for Unix”; a guide for comparable commands and directories in several popular forms of UNIX (AIX, Darwin, DG-UX, FreeBSD, HP-UX, IRIX, Linux, NetBSD, OpenBSD, SCO OpenServer, Solaris, SunOS, Tru64, and ULTRIX).
http://www.unix-vs-nt.org/ John Kirch’s article “Microsoft Windows NT Server 4.0 versus UNIX”
For more UNIX book listings, see also the general book listings on the UNIX web page.
If you want your book reviewed, please send a copy to: Milo, POB 1361, Tustin, CA 92781, USA.
Price listings are for courtesy purposes only and may be changed by the referenced businesses at any time without notice.
Unix for VMS Users (Digital Press Vax Users Series); reprint edition; by Philip E. Bourne; Digital Press; February 1994; ISBN 1555580343; paperback; 368 pages; $39.95
A Practical Guide to the Unix System; by Mark G. Sobell; Addison-Wesley Pub Co; October 1994; ISBN 0805375651; paperback; 800 pages; $37.95
Essential System Administration: Help for Unix System Administrators (Nutshell Handbook); 2nd edition; by Aeleen Frisch; O’Reilly & Associates; December 1996; ISBN 1565921275; paperback; 788 pages; $27.96
The Complete Guide to Netware 4.11/Intranetware; 2nd edition; by James E. Gaskin; Sybex; December 1996; ISBN 078211931X; paperback; $47.99; includes information on getting NetWare working with Windows, Macintosh, UNIX, and OS/2
Building a Unix Internet Server; by George Eckel; New Riders Publishing; June 1995; ISBN 1562054945; paperback (with CD-ROM); 325 pages; $30.40
Advanced Programming in the Unix Environment (Addison-Wesley Professional Computing Series); by W. Richard Stevens; Addison-Wesley Pub Co; June 1992; ISBN 0201563177; hardcover; 744 pages; $63.95
If you want your book reviewed, please send a copy to: Milo, POB 1361, Tustin, CA 92781, USA.
“If you’re a UNIX user, all UNIX are pretty much the same. If you’re a UNIX programmer, all UNIX are a little bit different. If you’re a UNIX system admin, all UNIX are completely different! That’s comming from ULTRIX, AIX, HP-UX, Solaris, and Digital UNIX experiences. Might as well count linux, too.” —Bob Koehler, Hubble Space Telescope Payload Flight Software Team
To donate, click here.
Note: Please mail donations to: Milo, PO Box 1361, Tustin, Calif, 92781, USA. Or use the link above to donate via credit cards.
A web site on dozens of operating systems simply can’t be maintained by one person. This is a cooperative effort. If you spot an error in fact, grammar, syntax, or spelling, or a broken link, or have additional information, commentary, or constructive criticism, please e-mail Milo. If you have any extra copies of docs, manuals, or other materials that can assist in accuracy and completeness, please send them to Milo, PO Box 1361, Tustin, CA, USA, 92781.
If you have an extra or unwanted copy of any official manuals or documentation on this operating system, please send them to: Milo, POB 1361, Tustin, CA 92781, USA. I have the following items: NONE.
Note: I am looking for a fan of ULTRIX who has the time to check this web site for completeness and accuracy regarding ULTRIX. Just check through the site about once a week or so and report back with any information (including the URL of the web page you are reporting).
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This web site handcrafted on Macintosh 
computers using Tom Bender’s Tex-Edit Plus 
and served using FreeBSD 
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†UNIX used as a generic term unless specifically used as a trademark (such as in the phrase “UNIX certified”). UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Ltd.
AlphaGeneration, AlphaServer, AlphaStation, Alpha AXP, AXP, DEC, DECstation, DECsystem, OpenVMS, ULTRIX, VAX, and VMS are trademarks of COMPAQ Computer Corporation. OSF/1 is a registered trademark of the Open Software Foundation. Names and logos of various OSs are trademarks of their respective owners.
Copyright © 1998, 1999, 2000, 2001, 2002 Milo
Last Updated: April 10, 2002
Created: June 22, 1998
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