[vagrant-up] How to uninstall vagrant totally?

I run 'sudo apt-get remove vagrant' 'sudo apt-get remove --auto-remove vagrant' 'sudo dpkg -r vagrant' 'rm -r ~/.vagrant.d' 'rm -rf /opt/vagrant' 'rm -f /usr/bin/vagrant' on Ubuntu. However, tried 'vagrant --version' again, 'Vagrant 2.1.4' still shows! How can I uninstall it completely? Sine I

Re: [vagrant-up] Can you create SSH port forwarding tunnels or sftp/scp using the vagrant share plugin?

I would think so too, but the connection didn't seem to allow for it. When I try to connect to the ssh pretty exposed on my local VM (), I don't even have a username, password or private key used to authenticate. Every SCP/SFTP/ssh connection sets up a new connection, but I have no idea how