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ORACLE VIRTUALBOX FOR MAC OS SIERRA INSTALL
In order for VirtualBox to work, their installation program needs to install something called a " kernel extension" (or "kext") on your Mac. This allows us to run a web server on your Mac that works exactly like the "real" web server you eventually upload your websites to. Ubuntu is a popular operating system used to power millions of web servers around the world. VirtualHostX uses VirtualBox to install and run an Ubuntu Linux operating system on your Mac. A virtual machine is completely independent computer that runs inside your Mac. VirtualBox is 3rd party, open-source software developed by Oracle that allows you to run "virtual machines" on your Mac.
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