/usr/share/cmake-3.5/Help/variable/UNIX.rst is in cmake-data 3.5.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | UNIX
----
``True`` for UNIX and UNIX like operating systems.
Set to ``true`` when the target system is UNIX or UNIX like (i.e.
:variable:`APPLE` and :variable:`CYGWIN`).
|