HP-UX (Hewlett-Packard UniX) is Hewlett-Packard's proprietary implementation of the Unix operating system, based on UNIX System V (initially System III) and first released in 1984.
HP-UX (произносится "эйч-пи-юкс")— проприетарная версия операционной системы UNIX фирмы Hewlett-Packard (HP).