IRIX

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IRIX 4.0.5 CD

General information about the SGI IRIX operating system. The last IRIX release was in 2006 and support for the operating system ended in 2013.

IRIX is a System V-based Unix computer operating system with BSD extensions developed by Silicon Graphics (SGI) to run natively on their 32- and 64-bit MIPS architecture workstations and servers.

As a result of its Unix underpinnings, it is capable of extremely long uptimes and its XFS file system is regarded as one of the most advanced journaling file systems in the industry.

IRIX has particularly strong support for 3D graphics, video, and high-bandwidth bulk data transfer. IRIX was one of the first Unix flavors to feature a graphical user interface for the main desktop environment and was widely used in the computer animation industry and for scientific visualization due to its extremely good performance with 3D graphics. IRIX uses the IRIX Interactive Desktop, which by default uses the 4Dwm window manager with a custom look designed using the Motif widget toolkit.

The current major version of IRIX is IRIX 6.5 which was released in May 1998. New minor versions were released every quarter up through version 6.5.30. Until version 6.5.22 there were two branches of each release: a maintenance release that included only fixes to the original IRIX 6.5 code and a feature release that included improvements and enhancements. Historically, the maintenance releases were a free download while the feature stream required a support contract. Selected versions up through the 6.5.22 maintenance release are currently available for free download while version 6.5.23 and higher require an active Silicon Graphics support contract, despite only running on Silicon Graphics hardware.

IRIX is compliant with UNIX System V Release 4, UNIX 95 and POSIX (including 1e/2c draft 15 ACLs and Capabilities).

Version History

Version Release Date
IRIX (4D1) 1.0 1987
IRIX (4D1) 3.0 1988
IRIX (4D1) 3.2 1989
IRIX (4D1) 3.3 Jun 1990
IRIX (4D1) 3.3.1 Sept 1990
IRIX (4D1) 3.3.2 Dec 1990
IRIX 4.0 Sept 1991
IRIX 4.0.1 Nov 1991
IRIX 4.0.2 Mar 1992
IRIX 4.0.3 Mar 1992
IRIX 4.0.4 Mar 1992
IRIX 4.0.5 1992
IRIX 5.0 Mar 1993
IRIX 5.0.1 Jun 1993
IRIX 5.1 Sept 1993
IRIX 5.2 Mar 1994
IRIX 5.3 Nov 1994
IRIX 6.0 1994
IRIX 6.0.1 Dec 1994
IRIX 6.1 Jul 1995
IRIX 6.2 Mar 1996
IRIX 6.3 Sept 1996
IRIX 6.4 Nov 1996
IRIX 6.5 May 1998
IRIX 6.5.1 Aug 1998
IRIX 6.5.2 Nov 1998
IRIX 6.5.3 Feb 1999
IRIX 6.5.4 May 1999
IRIX 6.5.5 Aug 1999
IRIX 6.5.6 Nov 1999
IRIX 6.5.7 Feb 2000
IRIX 6.5.8 May 2000
IRIX 6.5.9 Aug 2000
IRIX 6.5.10 Nov 2000
IRIX 6.5.11 Feb 2001
IRIX 6.5.12 May 2001
IRIX 6.5.13 Aug 2001
IRIX 6.5.14 Nov 2001
IRIX 6.5.15 Feb 2002
IRIX 6.5.16 May 2002
IRIX 6.5.17 Aug 2002
IRIX 6.5.18 Nov 2002
IRIX 6.5.19 Feb 2003
IRIX 6.5.20 May 2003
IRIX 6.5.21 Aug 2003
IRIX 6.5.22 Nov 2003
IRIX 6.5.23 Feb 2004
IRIX 6.5.24 May 2004
IRIX 6.5.25 Aug 2004
IRIX 6.5.26 Nov 2004
IRIX 6.5.27 Feb 2005
IRIX 6.5.28 Aug 2005
IRIX 6.5.29 Feb 2006
IRIX 6.5.30 Aug 2006

Guides

Manuals


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