os x install brew cask '/usr/../../brew-cask.rb' does not exist
brew 已安装完毕，安装brew cask
brew install caskroom/cask/brew-cask
error
==> brew cask install caskroom/cask/brew-cask
Error: '/usr/local/Library/Taps/caskroom/homebrew-cask/Casks/brew-cask.rb' does not exist.
Error: nothing to install
another try
brew install brew-cask
info
Error: No available formula with the name "brew-cask"
==> Searching for a previously deleted formula...
Error: No previously deleted formula found.
==> Searching for similarly named formulae...
This similarly named formula was found:
brew-cask-completion
To install it, run:
brew install brew-cask-completion
==> Searching taps...
Error: No formulae found in taps.
最终使用推荐的方法
brew install brew-cask-completion
赶快尝试下
➜ ~ brew cask search qq
==> Exact Match
qq
==> Partial Matches
qqbrowser qqinput qqmacmgr qqmusic