How to use systemctl to Restart Network on Ubuntu 20.04 In Linux

Step 1: Open a Terminal Window

To begin, open a terminal window on your Ubuntu 20.04 system. You can do this by searching for “Terminal” in the application menu or using the keyboard shortcut Ctrl + Alt + T.

Step 2: Restart the Network Service

sudo systemctl restart NetworkManager.service

• sudo: This command is used to run subsequent commands with superuser privileges, which are necessary for restarting system services.
• systemctl: This is the systemd command-line tool used to manage system services.
• restart: This option tells systemctl to restart the specified service.
• NetworkManager.service: This is the name of the service responsible for managing network configurations and interfaces on Ubuntu.

Step 3: Verify Restart Status

To verify that the network service has been restarted successfully, you can check the status of the networking.service by running the following command:

sudo systemctl status NetworkManager.service

This command will display information about the current status of the networking service, including whether it is active (running) or inactive (stopped).

In Linux, the Network is the backbone that enables communication between devices and the internet. Restarting the network on Ubuntu 20.04 is crucial for troubleshooting network issues or applying new configurations. This process involves refreshing network services and interfaces to ensure smooth connectivity. There are multiple methods to achieve this, including using systemctl to restart networking.service, using ifdown and ifup commands to bring down and bring up specific network interfaces, or utilizing nmcli to restart its service. Each method offers flexibility based on the user’s requirements and network setup.