Command option Sample:nmcli disconnect

Search command sample in the internet.It is the result.

nmcli disconnect without turning wifi card off    networking - How to connect to Wi-Fi through wpa_supplicant, dhcpcd or nmcli? - Unix & Linux Stack Exchange : http://unix.stackexchange.com/questions/392590/how-to-connect-to-wi-fi-through-wpa-supplicant-dhcpcd-or-nmcli

search Google

https://www.google.com/#q=nmcli disconnect