what is brew cask

Brew cask is an extension to Homebrew, a package management software for macOS, that allows the management of graphical applications through the Cask project. Homebrew typically deals with command-line software, while brew cask is for graphical software. A cask, just like a formula, is a file written in a Ruby-based DSL that describes how to install something. With brew cask, users can install large binary files via a command-line tool, such as Google Chrome, Dropbox, VLC, and Spectacle. To install apps with Homebrew, users use the brew command, while to install cask, they use the command brew install cask. However, it is worth noting that brew cask has been deprecated in favor of brew.