Ты идиот! Тебе напомнить что MacOSX это практически FreeBSD изначально была?
Этот сертификат вообще не означает относиться ли система к UNIX или нет. А лишь гарантирует что сертифицируемая система соответсвует определенным стандартам UNIX.Идем дальше:
-"Developers and vendors of Unix-like operating systems such as Linux, FreeBSD, and MINIX, typically do not certify their distributions and do not install full POSIX utilities by default.[32][33] Sometimes, SUS compliance can be improved by installing additional packages, but very few Linux systems can be configured to be completely conformant.
Darwin, the open source subset of macOS, has behavior that can be set to comply with UNIX 03.[34][35]
FreeBSD previously had a "C99 and POSIX Conformance Project" which aimed for compliance with a subset of the Single UNIX Specification, and documentation where there were differences.[36]
The FreeBSD C99 & POSIX Conformance Project aims to implement all requirements of the ISO 9899:1999 (C99) and IEEE 1003.1-2001 (POSIX) standards. In cases where aspects of these standards cannot be followed, those aspects will be documented in the c99(7) or posix(7) manuals. It is also an aim of this project to implement regression tests to ensure correctness whenever possible.
For Linux, the Linux Standard Base was formed in 2001 as an attempt to standardize the internal structures of Linux-based systems for increased compatibility. It is based on the POSIX specifications, the Single UNIX Specification, and other open standards, and also extends them in several areas; but there are some conflicts between the LSB and The POSIX standards.[37] However, although these standards are commonly accepted, few Linux distributions actually go through certification as LSB compliant."
https://en.wikipedia.org/wiki/Single_UNIX_Specification#cite...
В кратце, срали все на эту сертификацию. И вообще, конечно, the Open Group это еще те жулики. Кто бабло платит - тот и заказывает музыку.
