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まずはインストール 環境:Mac OS X 10.7.4 $ ruby -v ruby 1.8.7 (2011-12-28 patchlevel 357) [universal-darwin11.0] Homebrewを使ってやってみます $ brew install ruby Warning: It appears you have MacPorts or Fink installed. Software installed with other package managers causes known problems for Homebrew. If a formula fails to build, uninstall MacPorts/Fink and try again. ==> Installing ruby dependency: readline ==> Downloa
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