ubuntu@ip-172-31-44-239:~/emacs$ sudo apt-get install libgnutls
libgnutls26          libgnutls28-dev      libgnutlsxx27
libgnutls26-dbg      libgnutls-dev        libgnutlsxx28
libgnutls28          libgnutls-openssl27  
libgnutls28-dbg      libgnutls-xssl0