May 03, 2018
How to Check What Mac OS Version is Running on a Mac Feb 16, 2019 Mac OS Compatibility Guide by Mac Model Find out which macOS your Mac is using – Apple Support
Note: The headings on this list indicate the Macintosh System bundle names; the bullet points indicate the version of the System File included in that bundle. This is to make it clearer for people searching for specific bundle versions as opposed to System File versions. Finder File versions are not indicated. System File 1 System 0.85 (128k) (1983), System 1.0 (128k/ 512k) (1984)(also
Jul 15, 2020 · macOS Catalina, aka macOS 10.15, is the newest version of the operating system that runs on the Mac. macOS Catalina's name was inspired by Santa Catalina Island, popularly known as Catalina and First, the comprehensive list of ways to obtain the OS version. The uname command-line tool and function provides the unix (darwin) version of the OS. Although this is not the marketing version of the OS, it is aligned with it uniquely, so you can deduce the OS-X marketing version from it.
Suggestions to alias python to python3 will cause problems with virtual environments that set the version of python (eg: pyenv). With pyenv, you can set the version globally like so: pyenv global 3.8.2 and then in any specific project, you can create a .python-version file which has the python version inside of it: pyenv local 2.7.1
KB Parallels: Parallels Desktop and macOS compatibility