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
==> 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
brew install brew-cask
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.
brew install brew-cask-completion
➜ ~ brew cask search qq ==> Exact Match qq ==> Partial Matches qqbrowser qqinput qqmacmgr qqmusic