What is the command to add a new network card in Linux?

In Linux, the command used to add a new network card is the ip command or the ifconfig command.

1. Add a new network card using the ip command.
2. Create a new network interface with the specified name and type using sudo.
3. In this case, is the name of the new network card, and is the type of the new network card, such as ethernet or bridge.
4. Add a new network card using the ifconfig command.
5. Enable the specified network interface using the ‘sudo ifconfig up’ command.
6. Among them, is the name of the new network card.

Please note that the above command needs to be executed by a superuser (i.e. root user) or a user with administrative privileges.