The HP-UX System
The Hewlett-Packard’s UNIX (HP-UX) was based originally on System V release 3. The system initially ran exclusively on the PA-RISC HP 9000 platform. The Version 1 of HP-UX was released in 1984.
The Version 9, introduced SAM, its character-based graphical user interface (GUI), from which one can administrate the system. The Version 10, was introduced in 1995, and brought some changes in the layout of the system file and directory structure, which made it similar to AT&T SVR4.
The Version 11 was introduced in 1997. It was HP’s first release to support 64-bit addressing. But in 2000, this release was rebranded to 11i, as HP introduced operating environments and bundled groups of layered applications for specific Information Technology purposes.
In 2001, The Version 11.20 was introduced with support for Itanium systems. The HP-UX was the first UNIX that used ACLs (Access Control Lists) for file permissions and it was also one of the first that introduced built-in support for Logical Volume Manager.
Nowadays, HP-UX uses Veritas as primary file system due to partnership between Veritas and HP. The HP-UX is up to release 11iv3, update 4.
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