10.9での Xcode5 でのCommand toolのインストール2013/10/26 19:11

brew upgrade ruby-build
Warning: No developer tools installed.
You should install the Command Line Tools.
Run `xcode-select --install` to install them.
Error: ruby-build-20131024 already installed
Suzuki-no-MacBook-Air-2:~ butcher$ xcode-select --install
xcode-select: note: install requested for command line developer tools

xcode-select --install

って打って インストールが開始された