The command you want is
cleanup -- running
brew cleanup will remove packages that are on disk, but no longer installed.
> brew help cleanup
brew cleanup [--prune=days] [--dry-run] [-s] [formulae]:
For all installed or specific formulae, remove any older versions from the
cellar. In addition, old downloads from the Homebrew download-cache are deleted.
If --prune=days is specified, remove all cache files older than days.
If --dry-run or -n is passed, show what would be removed, but do not
actually remove anything.
If -s is passed, scrubs the cache, removing downloads for even the latest
versions of formulae. Note downloads for any installed formulae will still not be
deleted. If you want to delete those too: rm -rf $(brew --cache)
> brew cleanup
Removing: /usr/local/Cellar/awscli/1.10.19... (2,955 files, 22.3M)
Removing: /usr/local/Cellar/git/2.8.2... (1,418 files, 30.5M)
Removing: /usr/local/Cellar/imagemagick/6.9.3-7... (1,459 files, 17.9M)
Removing: /usr/local/Cellar/libgcrypt/1.7.0... (17 files, 1.5M)
Removing: /usr/local/Cellar/libgpg-error/1.21... (19 files, 419.4K)
Removing: /usr/local/Cellar/libksba/1.3.3... (13 files, 343K)
Removing: /usr/local/Cellar/mercurial/3.7.3... (386 files, 4.7M)
Removing: /usr/local/Cellar/node/6.0.0... (3,655 files, 38.8M)
Removing: /usr/local/Cellar/openssl/1.0.2g... (1,678 files, 12.0M)
Removing: /usr/local/Cellar/vim/7.4.1795... (1,687 files, 22.6M)
Removing: /Library/Caches/Homebrew/git-2.8.2.el_capitan.bottle.tar.gz... (11.2M)
Removing: /Library/Caches/Homebrew/imagemagick-6.9.3-7.el_capitan.bottle.tar.gz... (7M)
Removing: /Library/Caches/Homebrew/libgcrypt-1.7.0.el_capitan.bottle.tar.gz... (565.4K)
Removing: /Library/Caches/Homebrew/libgpg-error-1.21.el_capitan.bottle.tar.gz... (130.8K)
Removing: /Library/Caches/Homebrew/libksba-1.3.3.el_capitan.bottle.tar.gz... (126.6K)
Removing: /Library/Caches/Homebrew/node-6.0.0.el_capitan.bottle.tar.gz... (10.9M)
Removing: /Library/Caches/Homebrew/openssl-1.0.2g.el_capitan.bottle.tar.gz... (3.6M)
Removing: /Library/Caches/Homebrew/vim-7.4.1795.tar.gz... (12.0M)
==> This operation has freed approximately 196.4M of disk space.
I have a Monday morning regimen of:
That brings me up to date on Homebrew, then all of my installed brews and then it frees up disk space by removing old brews that are no longer referenced. For brews that I need to keep at a specific version, I use
brew pin to hold them there so I can still run this simple, three command, chain to update everything else around the pinned packages.