How to import, rename and delete an openvpn connection using a config file from terminal.

vpn-import.sh

# import the new connection using the vpn config file you have
sudo nmcli connection import type openvpn file config-file.ovpn

# rename an old/current connection:
sudo nmcli connection modify connectionId connection.id differentConnectionId

# rename the new imported connection
sudo nmcli connection modify config-file connection.id newConnectionId
sudo nmcli connection modify newConnectionId connection.interface-name newConnectionName

# delete a connection
sudo nmcli connection delete id connectionId

# see current connections
sudo nmcli connection