IRIX is a computer operating system developed by Silicon Graphics, Inc. (SGI) to run natively on their 32- and 64-bit MIPS architecture workstations and servers. Based on UNIX System V with BSD extensions, 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.
The IRIX name was first used around the time of release 3.0 of the operating system for SGI's IRIS 4D series of workstations and servers, in 1988. Previous releases were identified only by the release number prefixed by "4D1-", eg. "4D1-2.2". The 4D1- prefix continued to be used in official documentation to prefix IRIX release numbers.
IRIX 3.x was based on UNIX System V Release 3 with 4.3BSD enhancements, and incorporated the 4Sight windowing system, based on NeWS and IRIS GL. SGI's own Extent File System (EFS) replaced the System V filesystem.
|This page uses Creative Commons Licensed content from Wikipedia (view authors).|
|SGI IRIX 6.x branch|
|SGI IRIX 3.x|| Followed by|
SGI IRIX 4.x
|SGI IRIX 3.x|| Included in|