CentOS 네트워크(Network) 툴(tool)

# yum install NetworkManager

# systemctl status NetworkManager
NetworkManager.service - Network Manager
Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled)
Active: active (running) since Fri, 08 Mar 2013 12:50:04 +0100; 3 days ago

# systemctl start NetworkManager

# systemctl enable NetworkManager

2.5. NetworkManager Tools

Table 2.1. A Summary of NetworkManager Tools and Applications

Application or Tool	Description
nmcli	A command-line tool which enables users and scripts to interact with NetworkManager. Note that nmcli can be used on systems without a GUI such as servers to control all aspects of NetworkManager. It has the same functionality as GUI tools.
nmtui	A simple curses-based text user interface (TUI) for NetworkManager
nm-connection-editor	A graphical user interface tool for certain tasks not yet handled by the control-center utility such as configuring bonds and teaming connections. You can add, remove, and modify network connections stored by NetworkManager. To start it, enter nm-connection-editor in a terminal: ~]$ nm-connection-editor
control-center	A graphical user interface tool provided by the GNOME Shell, available for desktop users. It incorporates a Network settings tool. To start it, press the Super key to enter the Activities Overview, type Network and then press Enter. The Network settings tool appears.
network connection icon	A graphical user interface tool provided by the GNOME Shell representing network connection states as reported by NetworkManager. The icon has multiple states that serve as visual indicators for the type of connection you are currently using.

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출처
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-installing_networkmanager
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-checking_the_status_of_networkmanager
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-starting_networkmanager
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-networkmanager_tools