The requirement is to select a face from a photo and save it as another photo. Refer here and here.

Here is some notes about using Ubuntu guest on Mac host in VirtualBox.

This is a note about how to mount the 2nd hard disk when Ubuntu starting up. From here.

This is a note how to setup the Octopress environment on Ubuntu Xenial 16.04.

My environment is Ubuntu 16.04 Xenial. The default installation package of IntelliJ IDEA for Linux is in “tar.gz” format. Do the following steps to create the menu entry after extracting the package file.

From here.

Translate Shell (formerly Google Translate CLI) is a command-line translator powered by Google Translate (default), Bing Translator, Yandex.Translate and Apertium. It gives you easy access to one of these translation engines in your terminal.

From here.

The original solution was verified on Ubuntu 17.10. However it’s also verified on Ubuntu 18.04 after the 18.04 version is released.

Hope the following things work on the next LTS version “18.04”(Confirmed on 2018-05-14: all the instructions work on Ubuntu 18.04).