Brew Concepts
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Internal
Formula
A formula is a package definition written in Ruby. It 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
Bottle
Tap
Cask
User Space vs. System Space
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.