How to check the information and number of network cards in Linux system?

Generally refers to GNU/Linux, which is a Unix-like operating system that is free to use and spread freely. It is a multi-user, multi-task, multi-thread and multi-CPU operating system that follows POSIX. operating system. In a Linux system, network connection is a crucial part. It is the key to ensuring that the server or computer can communicate with the network. So how to check how many network cards there are in Linux? Let’s take a look at the detailed introduction.

In Linux, you can use the following methods to check how many network cards there are in the system:

　1. ifconfig command

ifconfig is a command used to manage network interface information. You can run the ifconfig command to view detailed information about all network interfaces in the system, such as network card name, IP address, and MAC address.

　2. IP command

　The ip command is a powerful network tool that can be used to configure and manage network interfaces. Use the ip
addr command to list all network interfaces in the system and their detailed information, including network card name, status, IP address, etc.

　3. netstat command

　netstat is a command used to display network-related information such as network connections, routing tables, etc. You can use the netstat
-i command to view the network interface list in the system, including network card name, MTU (Maximum Transmission Unit) and other information.

　4. lspci command

The lspci command is used to list all PCI device information in the system, including network cards. You can use the lspci | grep -i ethernet command to filter out network card device information.

These commands can be run in the terminal and provide output about the number and details of the network cards in the system. According to the specific needs and scenarios, select the appropriate command to view the network card information.

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