NetworkManager

Can ignore a connection to change or manipulate it

NMTUI - Network Manager Text User Interface
NMCLI - Network Manager CLI

$ nmtui - GUI interface for networking

$ nmcli-examples - good file to check syntax and options

$ sudo nmcli c reload - reload the config if manipulated

$ sudo nmcli con load /etc/sysconfig/network-scripts/ifcfg-enp0s3
- loads that specific config

$ sudo nmcli dev disconnect \
- bring down a connection
$sudo nmcli con up \
- bring a connection up

Need to bring connections down and up if manipulating with nmcli tool

$ sudo nmcli con show - see current config
$ sudo nmcli general status
- shows info on connectivity