How can I modify and apply network configurations in Ubuntu?

To modify and apply the network configuration in Ubuntu, you can follow these steps:

1. Open the terminal by using the shortcut Ctrl + Alt + T.
2. Edit the network configuration file using the following command:

sudo nano /etc/netplan/01-network-manager-all.yaml

1. In the open file, you can make changes to network configurations. For instance, you can modify parameters such as IP address, subnet mask, and default gateway.
2. After making changes, press the Ctrl + X combination keys, then press the Y key to save the file and press Enter to confirm.
3. Next, apply the new network configuration using the following command:

sudo netplan apply

1. Finally, restart the network services to apply the new configuration.

sudo systemctl restart NetworkManager

By following these steps, you can modify Ubuntu’s network configuration and make it effective. Please be cautious when editing network configuration files to avoid causing connectivity issues.