The brew command

Use man brew to view the manpage.

Command	Description
brew --cache	Print the path where Homebrew caches downloads (usually ~/Library/Caches/Homebrew)
brew --cellar	Print the real path to your Homebrew Cellar (usually /usr/local/Cellar)
brew --config	Print some useful system configuration
brew --env	Print Homebrew’s environment
brew --prefix [formula]	Print where formula is installed
brew --prefix	Print the real path to your Homebrew prefix (usually /usr/local)
brew audit	Audit all formulae for common code and style issues
brew cleanup [foo]	Remove older versions from the Cellar for all (or specific) formulae 1
brew create [url]	Generate formula for downloadable file at url, then open it in $BREW_EDITOR or $EDITOR 2
brew create tarball-url --cache	Generate a formula (including MD5), then download the tarball
brew create --macports foo	Open MacPorts’ search page in your browser, so you can see how they do foo
brew create --fink foo	Open Fink’s search page in your browser, so you can see how they do foo
brew doctor	Check your Homebrew installation for common issues
brew edit foo	Open formula in $HOMEBREW_EDITOR or $EDITOR
brew fetch --force -v --HEAD foo	Download the source package for foo. For tarballs, also prints MD5 and SHA1 checksums.
brew home	Open Homebrew’s homepage in your browser
brew home foo	Opens foo ’s homepage in your browser
brew info	Summarize all installed packages
brew info foo	Print all available info foo (regardless of whether foo is installed)
brew info --github foo	Open Github’s History page for foo in your browser
brew install foo	Install foo
brew install --HEAD foo	Install the HEAD version of foo (if its formula defines HEAD)
brew install --force --HEAD foo	Install a newer HEAD version of foo (if its formula defines HEAD)
brew link foo	Symlink all installed files for foo into the Homebrew prefix 3
brew list [foo]	List all installed files for foo (or all installed formulae with no arguments )
brew outdated	List formulae that have an updated version available (brew install foo will install the newer version)
brew prune	Remove dead symlinks from Homebrew’s prefix 4
brew remove foo	Uninstall foo
brew search	List all available formula
brew search foo	Search for foo in all available formula
brew search /foo/	Search for the regex /foo/ in all available formula
brew unlink foo	Unsymlink foo from Homebrew’s prefix
brew update	Update formulae and Homebrew itself
brew upgrade	Install newer versions of outdated packages

You can update outdated packages like so:

brew install `brew outdated` (or brew outdated | xargs brew install (or brew upgrade))

¹ To delete a specific version, just go to the folder in the Cellar and rm -rf it; alternatively, drag it to the trash in Finder.

² Homebrew tries to guess the formula name and version. If it fails, you’ll have to make your own template. I suggest copying wget ’s.

³ Symlinking is automatically performed when installing formulae. It’s useful for DIY installation, or swapping out versions of a package you have multiple installs of.

⁴ This is generally not needed. However, it can be useful if you are doing DIY installations.