title: Ruby aws-sdk - grant permission to all users
body: <p>I am writing the code to grant READ permissions to all users using <strong>aws-sdk</strong> gem.  In the documentation for the gem, I found the following:</p>
  
  <pre><code>bucket.objects.each do |object|
    puts object.key
    acl = object.acl
    acl.grant(:read).to("TODO: how can I specify 'ALL'???")
    object.acl = acl.to_xml
  end
  </code></pre>
  
  <p>It all makes sense, however I'm not quite sure how can I tell the grant read permission to <strong>ALL</strong> users?</p>