=====rbenv=====
====yosemiteのとき====

<code bash>
$ brew install rbenv ruby-build rbenv-gem-rehash
$ git clone https://github.com/sstephenson/rbenv-default-gems.git ~/.rbenv/plugins/rbenv-default-gems
$ echo 'bundler\nrails' ~/.rbenv/default-gems
</code>

.zshrcに
<code bash>
if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi

function gem(){
  $HOME/.rbenv/shims/gem $*
  if [ "$1" = "install" ] || [ "$1" = "i" ] || [ "$1" = "uninstall" ] || [ "$1" = "uni" ]
  then
    rbenv rehash
  fi
}

function bundle(){
  $HOME/.rbenv/shims/bundle $*
  if [ "$1" = "install" ] || [ "$1" = "update" ]
  then
    rbenv rehash
  fi
}

export PATH="$HOME/.rbenv/shims:$PATH"
</code>

<code bash>
$ rbenv install 2.2.2
</code>
/usr/local/にrubyをインストールしたい。rbenv使って。のメモ。

====rbenvインストール====

<code bash>
$ cd /usr/local
$ sudo git clone git://github.com/sstephenson/rbenv.git rbenv
$ sudo mkdir /usr/local/rbenv/shims
$ sudo mkdir /usr/local/rbenv/versions
$ sudo chgrp -R staff rbenv
$ sudo chmod -R g+rwxXs rbenv
</code>


====環境変数の設定====
zshなら
  * /etc/zprofile
  * ~/.zprofile

bashなら
  * /etc/profile
  * /etc/profile.d/rbenv.sh
  *  ~/.bash_profile
 
あたりに。

<code bash>
export RBENV_ROOT=/usr/local/rbenv
export PATH="$RBENV_ROOT/bin:$PATH"
eval "$(rbenv init -)"
</code>

設定の読み込み

<code bash>
$ . ~/.zprofile
</code>

====ruby-buildのインストール====
<code bash>
$ sudo mkdir /usr/local/rbenv/plugins
$ cd /usr/local/rbenv/plugins
$ sudo git clone git://github.com/sstephenson/ruby-build.git
$ sudo chgrp -R staff ruby-build
$ sudo chmod -R g+rwxs ruby-build
$ cd ruby-build
$ sudo ./install.sh
</code>
====rubyのインストール====
<code bash>
$ sudo rbenv install 2.0.0-p247
$ sudo rbenv rehash
$ sudo rbenv global 2.0.0-p247
</code>

gemでなんかインストールしたらrehash