What Does Single Unix Specification Mean?
Single Unix Specification is a family of standards required to be followed by the OS to qualify for the name UNIX. It is developed and maintained by the Austin group, based on earlier work by Open group and IEEE. It was created in the mid 1980s to standardize OS interfaces for variants of the UNIX OS.
Techopedia Explains Single Unix Specification
Initially, the UNIX OS had four elements; the specification, the technology, the registered trade mark (e.g. UNIX) and the product (e.g. UNIXWare). With the advent of the Single UNIX specification, there arose a single open consensus specification to define the product. The specification and the trade mark are managed and held in trust for the industry by the X/Open Company.
