How to install the programming language R, widely used across statisticians for data mining and data analysis, and the IDE RStudio on macOS with Homebrew.

How to install the programming language R, widely used across statisticians for data mining and data analysis, and the IDE RStudio on macOS with Homebrew.
Xcode is Apple’s development environment for their operating systems macOS, iOS, tvOS, and watchOS. If you want to develop software for Apple products you will need this programme.
MySQL is a famous open source relational database that is used widespread by websites to store data. For web development you may need a local instance of MySQL running.
LaTeX is the standard in academic writing, especially for mathematical and natural sciences. LaTeX is open source software and also available for Mac.
The Java Development Kit (JDK) is essential for Java developers and contains the Java runtime environment as well as the Java compiler and other Java libraries. If you want to write some Java code on your Mac, you will need the JDK to run your code.
Homebrew is a package manager for macOS that allows you to easily install third-party software and keep it up-to-date. If you have ever used Ubuntu, then Homebrew is much like aptitude (apt).
Git is a very powerful and useful version control system to keep track of changes in documents. The installation on macOS with Homebrew is easy.
For a local web design and development environment, running Apache with PHP is key. I show you how to run this setup on macOS and how to install WordPress and PHPMyAdmin.
When selling old hardware, for instance an old laptop or external hard drive, you want to make sure nobody can access your private traces and data that you left on the device. Even if you clear the trash bin of your computer, the data is not always gone and can be recovered. In fact, the data is marked as deleted but can still be accessed and restored using special software tools. The data will be removed ultimately only after it is overwritten by new data.
If you manually installed MySQL on your Mac using the distributable from the MySQL website, not Homebrew, then you need to uninstall MySQL by deleting its files manually.