Brew Concepts

Internal

• brew

Formula

A formula is a package definition written in Ruby. Homebrew comes with a good amount of existing formulae, and they are stored as /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/<package-name>.rb.

A new formula can be can be created with

brew create <URL> 

where <URL> is a zip or tar file, installed with

brew install <formula>

and debugged with:

brew install --debug --verbose <formula>

Formula API: http://www.rubydoc.info/github/Homebrew/brew/master/Formula

Commands

update

Fetches the latest version of Homebrew and all formulae and upgrades.

doctor

Checks the Homebrew installation for potential problems and exit with a non-zero status if potential problems are found.

cleanup

Remove old version from cellar for all installed (or specified) formulae. Old downloads from the Homebrew download-cache are deleted.