What is “rdiff-backup” Package?

Backs up one directory to another–also works over networks
For more details: http://rdiff-backup.nongnu.org/

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 rdiff-backup.

  brew install rdiff-backup

Now, use rdiff-backup!