What is “oath-toolkit” Package?

Tools for one-time password authentication systems
For more details: http://www.nongnu.org/oath-toolkit/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install oath-toolkit.

  brew install oath-toolkit

Now, use oath-toolkit!