Homebrew can be used to install the GNU versions of tools onto your Mac, but they are all prefixed with “g” by default. All commands have been installed with the prefix “g”. If you need to use these commands with their normal names, you can add a “gnubin” directory to your PATH from your bashrc.

Yes. It’s always been possible to run Linux on Macs as long as you use a version that is compatible with the Mac hardware. Most Linux applications run on compatible versions of Linux. You can start at www.linux.org.

Instructions

1. To install realpath, run the following command in macOS terminal (Applications->Utilities->Terminal) sudo port install realpath Copy.
2. To see what files were installed by realpath, run: port contents realpath Copy.
3. To later upgrade realpath, run: sudo port selfupdate && sudo port upgrade realpath Copy.

Apple Macs make great Linux machines. You can install it on any Mac with an Intel processor and if you stick to one of the bigger versions, you’ll have little trouble with the installation process. Get this: you can even install Ubuntu Linux on a PowerPC Mac (the old type using G5 processors).

Installing the Xcode Command Line Tools on a Mac

1. Start Xcode on the Mac.
2. Choose Preferences from the Xcode menu.
3. In the General panel, click Downloads.
4. On the Downloads window, choose the Components tab.
5. Click the Install button next to Command Line Tools.

In the Terminal app on your Mac, do any of the following: Enter the path of a file or folder: Drag the file or folder to the Terminal window. The item’s absolute path appears on the command line. You can also drag a folder from the title bar of a Finder window.