What is “patchutils” Package?

Small collection of programs that operate on patch files
For more details: http://cyberelk.net/tim/software/patchutils/

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 patchutils.

  brew install patchutils

Now, use patchutils!