删除并重新安装ruby ,history

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 2155  cd ~/.rvm/
 2156  ll
 2157  rvm use ree --default
 2158  rm -rf gems/ruby-1.9.2-p290@*
 2159  rm -rf gemsets/ruby/1.9.2*
 2160  rm -rf rubies/ruby-1.9.2-p290
 2161  ll
 2162  cd src/
 2163  ll
 2164  rm -rf ruby-1.9.2-*
 2165  ll
 2166  cd ..
 2167  ll
 2168  rvm list
 2169  ll
 2170  cd bin
 2171  ll
 2172  cd ..
 2173  ll
 2174  cd l
 2175  cd lib
 2176  ll
 2177  cd ..
 2178  ll
 2179  cd patch
 2180  ll
 2181  cd wrappers/
 2182  ll
 2183  rm -rf ruby-1.9.2-p290*
 2184  ll
 2185  cd ..
 2186  rvm install 1.9.2
 2187  rvm list
 2188  rvm use 1.9.2 --default
 2189  cd ~/code/ten
 2190  ls
 2191  gem list
 2192  gem install bundler
 2193  gem install bundler --no-ri --no-rdoc
 2194  which bundle
 2195  bundle install
 2196  cat /etc/hosts
 2197  sudo nano /etc/hosts
 2198  bundle install
 2199  gem install rake
 2200  rake -T
 2201  rake db:migrae
 2202  rake db:migrate
 2203  history



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