title: Rails: rbenv rehash not working (rbenv-shim exists)
body: <p>I am trying to rehash rbenv after installing a new gem 
  it gives me these error on my ubuntu server</p>
  
  <pre><code> rbenv: cannot rehash: /home/deployer/.rbenv/shims/.rbenv-shim exists
  </code></pre>
  
  <p>however .rbenv-shims doesn't exists </p>