What is “par2” Package?

Parchive: Parity Archive Volume Set for data recovery
For more details: https://github.com/Parchive/par2cmdline

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 par2.

  brew install par2

Now, use par2!