When the macOS Server automatically starts up, click Continue.Download macOS Server - or type "macOS Server" into the search bar, top right, if that link doesn't work for you.You get all the UNIX underpinning with all the Mac accessibility and ease of use. As a former Linux/UNIX administrator used to configuring complicated text files via a terminal command line interface, that little cash for that much time-savings feels like a steal. MacOS Server is available for $19.99 from the Mac App Store.
Optionally, you can check for any extra macOS Sierra updates in the App Store and install those as well before continuing.
#Apple os x server mac os x#