History of IRIX (2020)

19 hours ago

IRIX is the Unix-based operating system developed by Silicon Graphics for its MIPS-based workstations.
The version history spans from early IRIS GL2 Unix (0.x series) on 68k to IRIX 6.x, with detailed release dates for major versions.
Key transitions include the move from Motorola 68k to MIPS architecture and the adoption of names like IRIX from version 3.0 onward.
GUI evolution includes systems like MEX, NeWS, and later X11 with window managers such as 4DWM and desktops like Indigo Magic.
IRIX incorporated features from System V and BSD, and later versions included Trusted IRIX and XFS file system support.
The naming 'IRIX' is a portmanteau of IRIS (Integrated Raster Imaging System) and UNIX, reflecting its origins.
Historical context includes SGI's acquisition of MIPS in 1992, influencing IRIX development and RISC/os integration.
Version lists for 6.x, 5.x, 4.x, 3.x, and earlier provide a comprehensive timeline of releases and updates.

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