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Digital UNIX is a UNIX-based† operating system made by Compaq/DEC.
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“previously called OSF/1 or DUNIX”e54
“The DIGITAL UNIX Operating System is a 64-bit advanced kernel architecture based on Carnegie-Mellon University’s Mach V2.5 kernel design with components from Berkeley Software Distribution (BSD) 4.3 and 4.4, UNIX® System V, and other sources. DIGITAL UNIX is DIGITAL Equipment Corporation’s implementation of the Open Software Foundation™ (OSF®) OSF/1 R1.0, R1.1, and R1.2 technology, and the Motif® graphical user interface and programming environment.”w33
Intended purpose
server/mainframe: medium to large scale servers; minicomputers; mainframes
desktop/workstation: workstations (for those with UNIX familiarity)
handheld: not appropriate
real time: not appropriate
Hardware Supported: DEC Alphaw36
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.
“Digital UNIX continues to dominate the 64-bit arena, leaving HP-UX and IRIX to contest the second position, followed closely by AIX. Solaris and NT trail significantly behind. Digital benefits not only from strong software support for 64-bits, now being matched by other players, but also from top-to-bottom 64-bit hardware support and a lack of the minor compatibility tradeoffs required by other vendors’ solutions.” —D.H. Brown Associatesw43†
Kernel: 64-bit Mach 2.5-based implementation of BSD 4.3 and 4.4, System V, and other sourcese45 w33 (microkernel)
POSIX: compatible
File Systems Supported: Berkeley UFS, AdVFS, NFS, ISO9660 (with RockRidge extensions)e103; FAT with third party freeware, “mtools”, a set of MS-DOS utilities for UNIX† available at ftp://prep.ai.mit.edu/pub/gnu/mtools-2.0.7]w55, SMB (through SAMBA), DFSe118
Other Systems Emulated: PDP11e103, DECNET Networkinge103, SunOS 4.1.xw55, Solaris 1.xw55
www.novalink.com/freeport-express “FreePort Express is a binary translator (running on Alpha) which permits you to convert your SunOS 4.1.x (same as Solaris 1.x) user executables into Digital UNIX executables in minutes. FreePort Express runs under Digital UNIX V3.0 or later, and is available FREE of charge (hence the name).”w55
Text Command Shell: UNIX shells
User Interface (graphic): Motifw33, CDEe103
Businesses and organizations with servers powered by Digital UNIX (Compaq Tru64 UNIX): AltaVista.com, Amazon.com, Lycos.com, the Vatican, WellsFargo.comw52
www.digital.com/info/internet/document/ias/tuning.html — “Digital UNIX Tuning Parameters for Web Servers”
http://www.join.com “JOIN DHCP/DDNS” commercial integrated DHCP and DDNS servers from Join Systems for DHCP and BootP clients running on SunOS 4.x, Solaris 2.x SPARC and x86, Digital UNIX, HP-UX 10.x using Motif GUI, evaluation copies available online.
Digital UNIX comes in second place with strong network security capabilities, bundling not only Web-browsing capabilities but also Web-authoring tools, with Navigator Gold, and a solid set of TCP/IP extensions. However, Digital UNIX lacks advanced NFS features such as CacheFS and AutoFS.” —Digital Equipment Corporation, “AIX 4.3 Leaps To 64-Bits In Dead Heat With Digital UNIX 4.0”w51
See also chart of internet features.
Other:
“As UNIX evolves into a 64-bit operating system, AIX 4.3 and Digital UNIX 4.0d share the lead for delivering commercial UNIX functions. Confronted with AIX 4.3 and HP-UX 11.0 upgrading to full 64-bit capabilities, Digital UNIX draws enough strength from the maturity of its pioneering 64-bit implementation to retain a significant lead for providing the full range of 64-bit features. Digital UNIX 4.0d also leads over all UNIX competitors for PC interoperability — surpassed only by NT — and scores very competitively in features for Internet/intranet, reliability, and scalability.” —D.H. Brown Associatesw42†
www.digital.com/info/porting_assistant “The Digital Porting Assistant (available for Digital UNIX 3.2, and shipped as part of the developer toolkit on Digital UNIX 4.0) is a graphical environment which aids in the porting process. In addition to doing lint-like checking of C and Fortran code, it also contains extensive on-line help regarding developing software on Digital UNIX.”w55
Please send recommendations on additional URLs to Milo.
http://www.tru64unix.compaq.com/docs/ — on-line documentation (including Tru64 UNIX V4, V5 documentation set, Tru64 UNIX Technical updates, Tru64 UNIX reference pages, White papers, TruCluster Software)
www.compaq.com/support/ — on-line support
www.service.digital.com/patches/ — patches
ftp.digital.com/pub/DEC/Alpha/firmware/ — firmware
http://www.partner.digital.com/www-catalog/ — a searchable “COMPAQ Solutions Alliance Partners” list for commercial software products available for Alpha systems
http://www.digital.com/info/software.html — a list of free software known to be ported to Tru64 UNIX
http://www.digital.com/DTJ000/ “Digital Technical Journal”
(Frequently Asked Questions)
http://www.tru64.org/faq/tru64_faq.php3 “Tru64 UNIX FAQ”
ftp://ftp.digital.com/pub/Digital/dec-faq/Digital-UNIX “DEC OSF/1 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/decinfo “DEC general FAQ”
www.ornl.gov/cts/archives/mailing-lists/ — Archives of tru64-unix-managers mailing list
www.alpha-processor.com — information on the alpha processor
http://www.stokely.com/unix.sysadm.resources/faqs.t-z.html#faq.link.tru64 “Stokely’s Tru64 System Administrator FAQ links”
http://www.stokely.com/unix.sysadm.resources/faqs.a-m.html#faq.link.dec “Stokely’s DEC System Administrator FAQ links”
http://www.unixguide.net/unixguide.shtml “UNIXguide.net (AIX, FreeBSD, HP-UX, LINUX, SOLARIS & Tru64)”; a guide for comparable commands and directories in several popular forms of UNIX.
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.linuxrx.com/WS_Linux/OS_comparison.html “The Linux resource exchange — Operating systems comparison” LINUX, HPUX, Windows NT, BSDi, FreeBSD, IRIX, Digital UNIX, Solaris, Macintosh, OS/2, UnixWare, OpenServere83
http://www.unix-vs-nt.org/ John Kirch’s article “Microsoft Windows NT Server 4.0 versus UNIX”
http://www.dhbrown.com/pdfs/osscorecard.html “Operating System Scorecard — D.H. Brown Associates”
http://www.join.com “JOIN DHCP/DDNS” commercial integrated DHCP and DDNS servers from Join Systems for DHCP and BootP clients running on SunOS 4.x, Solaris 2.x SPARC and x86, Digital UNIX, HP-UX 10.x using Motif GUI, evaluation copies available online.
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
Digital Unix System Administrator’s Guide; by Matthew Cheek; Digital Press; September 1998; ISBN 1555581994; paperback; 350 pages; $39.95
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
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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.
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This web site handcrafted on Macintosh 
computers using Tom Bender’s Tex-Edit Plus 
and served using FreeBSD 
.
†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, 2004 Milo
Last Updated: March 21, 2004
Created: June 22, 1998
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