HP-UX is Hewlett-Packard's proprietary implementation of the Unix operating system. It runs on their PA-RISC range of processors and Intel's Itanium processor, and was also available for later Apollo/Domain systems. Earlier versions also ran on the HP 9000 Series 200, 300, and 400 computer systems based on the Motorola 68000 series of processors, as well as the HP 9000 Series 500 computers based on HP's proprietary FOCUS processor architecture.

HP-UX was the first Unix to use access control lists for file access permissions rather than the standard Unix permissions system. HP-UX was also among the first Unix systems to include a built-in Logical Volume Manager, a derivative of the Veritas volume manager.

Releases

• 11.11 (2000) — Also known as 11i, this release of HP-UX intruduced the concept of Operating Environments. These are bundled groups of layered applications intended for use with a general category of usage. The available types were the Mission Critical, Enterprise, Internet, Technical Computing, and Minimal Technical OEs. (The last two were intended for HP 9000 workstations.) The main enhancements with this release were support for hard partitions, gigabit ethernet, NFS over TCP/IP, dynamic kernel tunable parameters, and protected stacks.

External links

• Hewlett-Packard HP-UX (http://www.hp.com/go/hpux/)
• The HP-UX Porting and Archive Center (http://hpux.cs.utah.edu/): Porting Open Source Software to HP-UX
• comp.sys.hp.hpux from Google Groups (http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&group=comp.sys.hp.hpux)
• HP-UX FAQ (http://www.faqs.org/faqs/hp/hpux-faq/)
• Securing HP-UX (http://www.blacksheepnetworks.com/security/resources/sec_HPUX2.html)