AIX was first announced as a product in 1986 as the operating system (OS) for the PC RT, IBM’s first commercial RISC processor system. At that time UNIX as an operating system was in its childhood—SUN Microsystems had released SunOS in 1982, and HP-UX debuted in 1984. But at that point there was little standardization across these UNIX variants—the Portable Operating System Interface (POSIX) standards group within the IEEE were working on a set of standards for UNIX-like operating systems, but the first of those would not be released until 1988, and it dealt largely with kernel internals, not issues of interest to the systems administrator like input/output (I/O) device management, network configuration, or package management.
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