title: What is the syntax for `gem install` multiple gems, specifying versions for each one?
body: <p>How can I use <code>gem install</code> to install multiple gems at the same time, while also specifying the versions I want?</p>
  
  <p>Example:</p>
  
  <pre><code>gem install akami -v  1.2.0 --ignore-dependencies
  gem install atomic -v  1.1.14 --ignore-dependencies
  gem install aws-s3 -v 0.6.2 --ignore-dependencies
  gem install backports -v  3.3.0 --ignore-dependencies
  gem install brendanlim-sms-fu -v 1.0.0 --ignore-dependencies
  gem install builder -v  3.1.3 --ignore-dependencies
  gem install capistrano -v  2.9.0 --ignore-dependencies
  </code></pre>
  
  <p>How could I instruct <code>gem install</code> to execute that in one line?</p>
  
  <hr>
  
  <p>The accepted answer do answer the question. But the final approach I took was to use bundler 1.0.22, which is compatible with ruby 1.8.6.</p>