How does ubuntu modify the network configuration

In the Ubuntu system, you can modify the network configuration in many ways, including using command line tools and GUI tools. Here are two common methods:

1. Command line mode

   Editing is required to modify network configuration through command line mode /etc/netplan/ Directory, and then regenerate the configuration file and apply the changes. The specific steps are as follows:

   1. Open the terminal and enter the following command to open the YAML file to be edited:

       sudo nano /etc/ netplan/ 01 -netcfg.yaml

      among 01-netcfg.yaml Is the default network profile name.

   2. Find the interface to be modified in the file and make necessary changes (such as static IP address, gateway, etc.).
   3. Press Ctrl + X Save your changes and exit the editor.
   4. Run the following command to apply the changes:

       sudo netplan apply
      

   You can use ifconfig or ip addr Command to check whether the new network configuration takes effect.

2. GUI mode

   In the Ubuntu system, you can also use GUI tools to easily modify the network configuration. The specific steps are as follows:

   1. Click the network icon in the upper right corner of the screen and select "Wired Settings" or "Wi Fi Settings" (depending on the type of connection you are currently using).
   2. Click the "Options" button in the pop-up dialog box, and then select the "IPv4" or "IPv6" tab.
   3. Make necessary changes in the tab, such as enabling the static IP address and entering relevant details, such as IP address, gateway, DNS, etc.
   4. Click the Apply button to save the changes and close the dialog box.

It should be noted that when modifying the network configuration, be careful and make sure you understand the impact of the changes. If you are not sure how to modify the network configuration, you can consult the network administrator or professional technicians for help.