What is “rename” Package?

Perl-powered file rename script with many helpful built-ins
For more details: http://plasmasturm.org/code/rename

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 rename.

  brew install rename

Now, use rename!