ruby on rails - Invalid Operation Error when rvmsudo apt-get on ubuntu 12.04.1 -

We are using rvm 1.19.0 so that the passenger for rail and libcurl4-openssl-dev I for NGN? Although there was an error, we recommend the following:

  $ export rvmsudo_secure_path = 1   
 Now another one of the unlawful operations as The error is:    ubuntu @ $ rvmsudo apt-get libcurl4-openssl-dev e: illegal operation libcurl4-openssl-dev   
 What's wrong with the RVM? is? Thanks for the help.   
 
 
  rvmsudo apt-get install libcurl4-openssl-dev