IRIX

IRIX
	IRIX 5.2
Developer	Silicon Graphics
Source model	Closed source
Initial release	IRIX 3.0; (1988)
Latest release	IRIX 6.5.30 ; (16 August 2006)
Supported platforms	MIPS
Kernel type	Monolithic
User interface	IRIX Interactive Desktop
License	Proprietary

IRIX is an operating system developed by Silicon Graphics. IRIX was one of the first UNIX flavors to include a GUI by default. It was widely used in computer animation and scientific computing due to its high-performance 3D graphics. The last major version of IRIX was version 6.5 from May 1998. Free minor updates were released until 2005, with updates later than 6.5.22 requiring an active Silicon Graphics contract being released until 16 August 2006 with the release of IRIX 6.5.30. Sales were discontinued on 29 December 2006, with support being ended in December 2013.

IRIX is based on UNIX System V with BSD extensions.

Version history[edit | edit source]


Version	UNIX version	Release date	Notes
IRIX 3.x	SVR3	1988	Windowing system is 4Sight, which is based on NeWS and IRIS GL.
IRIX 4.x	SVR3	1991	4Sight has been replaced with the X Window System (X11R4).
IRIX 5.x	SVR4	1993	IRIX 5.3 introduced the XFS journaling file system.
IRIX 6.x	SVR4	1994	Added support for the MIPS R8000 processor. Later releases added support for other MIPS processors.