title: heroku login error
body: <p>I am using Ubuntu. When I try to login to Heroku from command shell i get the follwing error:</p>
  
  <pre><code>/usr/local/lib/ruby/1.9.1/net/http.rb:644:in `initialize': getaddrinfo: Name or service not known (SocketError)
  
  from /usr/local/lib/ruby/1.9.1/net/http.rb:644:in `open'
  from /usr/local/lib/ruby/1.9.1/net/http.rb:644:in `block in connect'
  from /usr/local/lib/ruby/1.9.1/timeout.rb:44:in `timeout'
  from /usr/local/lib/ruby/1.9.1/timeout.rb:89:in `timeout'
  from /usr/local/lib/ruby/1.9.1/net/http.rb:644:in `connect'
  from /usr/local/lib/ruby/1.9.1/net/http.rb:637:in `do_start'
  from /usr/local/lib/ruby/1.9.1/net/http.rb:626:in `start'
  from /usr/local/lib/ruby/gems/1.9.1/gems/rest-client-1.6.7/lib/restclient/request.rb:172:in `transmit'
  </code></pre>