Nmcli for controlling network manager

Last Blog Review →

In the last blog we understood, the basic but very useful commands of the networking used in Linux which are used in day to day life for troubleshooting the connectivity issue.

What is Nmcli ?

nmcli is a command line tool for controlling network manager, allowing you to manage network connections, devices and settings directly from terminal.

nmcli commands

1. Nmcli command to show list of all connection

    nmcli connection show
   

2. Nmcli command to list of active connection

    nmcli connection show --active
   

3. Nmcli command to show specific connection

    nmcli connection show <connection_name>
    nmcli connection show "Wifi"
   

4. Nmcli command to show device status

    nmcli device status
   

5. Nmcli command to create new connection

    nmcli connection add type <connection_type> con-name <connection_name> ifname <interface_name> <other_options>
   

   • <connection_type>: Type of the connection, such as ethernet, wifi, vpn, etc.

   • <connection_name>: The name you want to give to this connection.

   • <interface_name>: The network interface (e.g., eth0, wlan0) to which the connection will be associated.

   • <other_options>: Additional configuration options based on the connection type.

6. Nmcli command to modify connection to add dns

    nmcli connection modify <connection_name> ipv4.dns "<dns_ip>"
   

7. Nmcli command to activate new connection

    nmcli connection up <connection_name>
   

8. Nmcli command to deactivate new connection

    nmcli connection down <connection_name>
   

9. Nmcli command to start new connection & stop old connection

    nmcli connection modify "MyWiFi" connection.autoconnect no
    nmcli connection modify "MyWiFi" connection.autoconnect yes
   

10. Nmcli command to remove existing connection

    nmcli con delete <conn-name>
    

11. Command to set hostname

    hostnamectl set-hostname <new_hostname>
    

12. Command to show hostname

    hostname
    

Conclusion →

In this blog we understood, what is Nmcli which is network manager command line tool to delete, create i.e. manage network connection which is easier way to handle the configuration.

Image credit → https://images.app.goo.gl/7a13AGbta8SwMvx3A